The following is a list of mental disorders as defined by the DSM and ICD.

The Diagnostic and Statistical Manual of Mental Disorders

Diagnostic and Statistical Manual of Mental Disorders

The Diagnostic and Statistical Manual of Mental Disorders is published by the American Psychiatric Association and provides a common language and standard criteria for the classification of mental disorders...

 (DSM) is the American Psychiatric Association

American Psychiatric Association

The American Psychiatric Association is the main professional organization of psychiatrists and trainee psychiatrists in the United States, and the most influential worldwide. Its some 38,000 members are mainly American but some are international...

's standard reference for psychiatry

Psychiatry

Psychiatry is the medical specialty devoted to the study and treatment of mental disorders. These mental disorders include various affective, behavioural, cognitive and perceptual abnormalities...

 which includes over 400 different definitions of mental disorders. The International Statistical Classification of Diseases and Related Health Problems (ICD) is published by the World Health Organization

World Health Organization

The World Health Organization is a specialized agency of the United Nations that acts as a coordinating authority on international public health. Established on 7 April 1948, with headquarters in Geneva, Switzerland, the agency inherited the mandate and resources of its predecessor, the Health...

, and it contains a section on psychological and behavioral disorders. The diagnostic criteria and information in the DSM and ICD are revised and updated with each new version. This list contains conditions currently recognised descriptions of mental disorders as defined by these two documents.

There is disagreement in various fields of mental health care, including the field of psychiatry

Psychiatry

Psychiatry is the medical specialty devoted to the study and treatment of mental disorders. These mental disorders include various affective, behavioural, cognitive and perceptual abnormalities...

, over the definitions and criteria used to delineate various disorders. Of particular concern to some professionals is whether some of these conditions should be classified as 'mental illness

Mental illness

A mental disorder or mental illness is a psychological or behavioral pattern generally associated with subjective distress or disability that occurs in an individual, and which is not a part of normal development or culture. Such a disorder may consist of a combination of affective, behavioural,...

es' at all, or whether they would be better described as neurological disorder

Neurological disorder

A neurological disorder is a disorder of the body's nervous system. Structural, biochemical or electrical abnormalities in the brain, spinal cord, or in the nerves leading to or from them, can result in symptoms such as paralysis, muscle weakness, poor coordination, loss of sensation, seizures,...

s, or in other ways. Some items listed are ultimately removed: homosexuality

Homosexuality and psychology

Psychology was one of the first disciplines to study homosexuality as a discrete phenomenon. Prior to and throughout most of the 20th century, common standard psychology viewed homosexuality in terms of pathological models as a mental illness...

 was originally listed in the DSM, but was removed when the American Psychiatric Association officially stated that "homosexuality per se implies no impairment in judgment, stability, reliability, or general social or vocational capabilities".

A

• Acute stress disorder
• Adjustment disorder
  Adjustment disorder
  Adjustment disorder is a psychological response to an identifiable stressor or group of stressors that cause significant emotional or behavioral symptoms that do not meet criteria for anxiety disorder, PTSD, or acute stress disorder...
  
  
• Adolescent antisocial behavior
  Anti-social behaviour
  Anti-social behaviour is behaviour that lacks consideration for others and that may cause damage to society, whether intentionally or through negligence, as opposed to pro-social behaviour, behaviour that helps or benefits society...
  
  
• Adult antisocial behavior
  Anti-social behaviour
  Anti-social behaviour is behaviour that lacks consideration for others and that may cause damage to society, whether intentionally or through negligence, as opposed to pro-social behaviour, behaviour that helps or benefits society...
  
  
• Adverse effects of medication-not otherwise specified
• Age-related cognitive decline
• Agoraphobia
• Alcohol-related disorder
• Alzheimer's
• Amnestic disorder
  Amnesia
  Amnesia is a condition in which one's memory is lost. The causes of amnesia have traditionally been divided into categories. Memory appears to be stored in several parts of the limbic system of the brain, and any condition that interferes with the function of this system can cause amnesia...
  
  
• Amphetamine (or amphetamine-like)-related disorder

• Anorexia nervosa
  Anorexia nervosa
  Anorexia nervosa is an eating disorder characterized by refusal to maintain a healthy body weight and an obsessive fear of gaining weight. Although commonly called "anorexia", that term on its own denotes any symptomatic loss of appetite and is not strictly accurate...
  
  
• Antisocial personality disorder
  Antisocial personality disorder
  Antisocial personality disorder is described by the American Psychiatric Association's Diagnostic and Statistical Manual, fourth edition , as an Axis II personality disorder characterized by "...a pervasive pattern of disregard for, and violation of, the rights of others that begins in childhood...
  
  
• Anxiety disorder
  Anxiety disorder
  Anxiety disorder is a blanket term covering several different forms of abnormal and pathological fear and anxiety. Conditions now considered anxiety disorders only came under the aegis of psychiatry at the end of the 19th century. Gelder, Mayou & Geddes explains that anxiety disorders are...
  
  
• Anxiolytic-related disorder
• Asperger syndrome
  Asperger syndrome
  Asperger's syndrome that is characterized by significant difficulties in social interaction, alongside restricted and repetitive patterns of behavior and interests. It differs from other autism spectrum disorders by its relative preservation of linguistic and cognitive development...
  
  
• Attention-deficit/hyperactivity disorder
• Atypical autism
• Autistic disorder
• Autophagia
  Autophagia
  Autophagia is not classified as a mental disorder or a symptom of a mental disorder in the Diagnostic and Statistical Manual of Mental Disorders , the diagnostic manual used in the United States....
  
  
• Avoidant personality disorder
  Avoidant personality disorder
  Avoidant personality disorder is a personality disorder recognized in the Diagnostic and Statistical Manual of Mental Disorders handbook in a person characterized by a pervasive pattern of social inhibition, feelings of inadequacy, extreme sensitivity to negative evaluation, and avoidance of...
  
  

B

• Bereavement
• Bibliomania
  Bibliomania
  Bibliomania can be a symptom of obsessive–compulsive disorder which involves the collecting or even hoarding of books to the point where social relations or health are damaged.-Description:...
  
  
• Binge eating disorder
  Binge eating disorder
  Binge eating disorder is the most common eating disorder in the United States affecting 3.5% of females and 2% of males and is prevalent in up to 30% of those seeking weight loss treatment...
  
  
• Bipolar disorder
  Bipolar disorder
  Bipolar disorder or bipolar affective disorder, historically known as manic–depressive disorder, is a psychiatric diagnosis that describes a category of mood disorders defined by the presence of one or more episodes of abnormally elevated energy levels, cognition, and mood with or without one or...
  
  
• Body dysmorphic disorder
  Body dysmorphic disorder
  Body Dysmorphic Disorder is a type of mental illness, a somatoform disorder, wherein the affected person is exclusively concerned with body image, manifested as excessive concern about and preoccupation with a perceived defect of his or her physical features...
  
  

• Borderline intellectual functioning
  Borderline intellectual functioning
  Borderline intellectual functioning is a categorization of intelligence wherein a person has below average cognitive ability , but the deficit is not as severe as mental retardation...
  
  
• Borderline personality disorder
  Borderline personality disorder
  Borderline personality disorder is a personality disorder described as a prolonged disturbance of personality function in a person , characterized by depth and variability of moods.The disorder typically involves unusual levels of instability in mood; black and white thinking, or splitting; the...
  
  
• Breathing-related sleep disorder
• Brief psychotic disorder
  Brief psychotic disorder
  Brief psychotic disorder is a period of psychosis whose duration is generally shorter, non re-occurring, and not better accounted for by another condition....
  
  
• Bulimia nervosa
  Bulimia nervosa
  Bulimia nervosa is an eating disorder characterized by binge eating and purging or consuming a large amount of food in a short amount of time, followed by an attempt to rid oneself of the food consumed, usually by purging and/or by laxative, diuretics or excessive exercise. Bulimia nervosa is...
  
  

C

• Caffeine-related disorder
• Cannabis-related disorder
• Catatonic disorder
• Catatonic Schizophrenia
  Catatonia
  Catatonia is a state of neurogenic motor immobility, and behavioral abnormality manifested by stupor. It was first described in 1874: Die Katatonie oder das Spannungsirresein ....
  
  
• Childhood antisocial behavior
• Childhood Disintegrative Disorder
  Childhood disintegrative disorder
  Childhood disintegrative disorder , also known as Heller's syndrome and disintegrative psychosis, is a rare condition characterized by late onset of developmental delays in language, social function, and motor skills...
  
  
• Chronic motor or vocal tic disorder

• Circadian rhythm sleep disorder
  Circadian rhythm sleep disorder
  Circadian rhythm sleep disorders are a family of sleep disorders affecting, among other things, the timing of sleep. People with circadian rhythm sleep disorders are unable to sleep and wake at the times required for normal work, school, and social needs. They are generally able to get enough sleep...
  
  
• Clinical Depression
  Clinical depression
  Major depressive disorder is a mental disorder characterized by an all-encompassing low mood accompanied by low self-esteem, and by loss of interest or pleasure in normally enjoyable activities...
  
  
• Cocaine-related disorder
• Cognitive disorder
  Cognitive disorder
  Most common mental disorders affect cognitive functions, mainly memory processing, perception and problem solving. The most direct cognitive disorders are amnesia, dementia and delirium. Others include anxiety disorders such as phobias, panic disorders, obsessive–compulsive disorder, generalized...
  
  
• Communication disorder
  Communication disorder
  A communication disorder is a speech and language disorder which refers to problems in communication and in related areas such as oral motor function. The delays and disorders can range from simple sound substitution to the inability to understand or use language...
  
  
• Conduct disorder
  Conduct disorder
  Conduct disorder is psychological disorder diagnosed in childhood that presents itself through a repetitive and persistent pattern of behavior in which the basic rights of others or major age-appropriate norms are violated...
  
  
• Conversion disorder
  Conversion disorder
  Conversion disorder is a condition in which patients present with neurological symptoms such as numbness, blindness, paralysis, or fits without a neurological cause. It is thought that these problems arise in response to difficulties in the patient's life, and conversion is considered a psychiatric...
  
  

E

• Eating disorder not otherwise specified
  Eating disorder not otherwise specified
  Eating disorder not otherwise specified involves disordered eating patterns. EDNOS is described in the DSM-IV-TR as a "category [of] disorders of eating that do not meet the criteria for any specific eating disorder".- Characteristics :...
  
  
• Echolalia
  Echolalia
  Echolalia is the automatic repetition of vocalizations made by another person. It is closely related to echopraxia, the automatic repetition of movements made by another person....
  
  
• Echopraxia
  Echopraxia
  Echopraxia is the involuntary repetition or imitation of the observed movements of another. It is closely related to echolalia, the involuntary repetition of another's speech. The etymology of the term is from Ancient Greek: "ἠχώ from ἠχή " and "πρᾶξις "...
  
  

• Encopresis
  Encopresis
  Encopresis is involuntary fecal soiling in adults and children who have usually already been toilet trained. Persons with encopresis often leak stool into their undergarments.-Prevalence:The estimated prevalence of encopresis in four-year-olds is between one and three percent...
  
  
• Enuresis
  Enuresis
  Enuresis refers to an inability to control urination. Use of the term is usually limited to describing individuals old enough to be expected to exercise such control.Types of enuresis include:* Nocturnal enuresis* Diurnal enuresis...
  
   (not due to a general medical condition)
• Exhibitionism
  Exhibitionism
  Exhibitionism refers to a desire or compulsion to expose parts of one's body – specifically the genitals or buttocks of a man or woman, or the breasts of a woman – in a public or semi-public circumstance, in crowds or groups of friends or acquaintances, or to strangers...
  
  
• Expressive language disorder
  Expressive language disorder
  Expressive language disorder is a communication disorder in which there are difficulties with verbal and written expression. It is a specific language impairment characterized by an ability to use expressive spoken language that is markedly below the appropriate level for the mental age, but with a...
  
  

G

• Ganser syndrome
  Ganser syndrome
  Ganser syndrome is a rare dissociative disorder previously classified as a factitious disorder. It is characterized by nonsensical or wrong answers to questions or doing things incorrectly, other dissociative symptoms such as fugue, amnesia or conversion disorder, often with visual...
  
  
• Gender identity disorder
  Gender identity disorder
  Gender identity disorder is the formal diagnosis used by psychologists and physicians to describe persons who experience significant gender dysphoria . It describes the symptoms related to transsexualism, as well as less severe manifestations of gender dysphoria...
  
  

• Generalized anxiety disorder
• General adaptation syndrome

H

• Hallucinogen-related disorder
• Histrionic personality disorder
  Histrionic personality disorder
  Histrionic personality disorder is defined by the American Psychiatric Association as a personality disorder characterized by a pattern of excessive emotionality and attention-seeking, including an excessive need for approval and inappropriately seductive behavior, usually beginning in early...
  
  
• Huntington's disease
  Huntington's disease
  Huntington's disease, chorea, or disorder , is a neurodegenerative genetic disorder that affects muscle coordination and leads to cognitive decline and dementia. It typically becomes noticeable in middle age. HD is the most common genetic cause of abnormal involuntary writhing movements called chorea...
  
  

• Hypomanic episode
• Hypochondria Disorder

I

• Impulse control disorder
  Impulse control disorder
  Impulse control disorder is a set of psychiatric disorders including intermittent explosive disorder, kleptomania, pathological gambling, pyromania , and three body-focused repetitive or compulsive behaviors of trichotillomania , onychophagia and dermatillomania...
  
  
• Impulse-control disorder not elsewhere classified
• Inhalant-related disorder

• Insomnia due to a general medical condition
• Intermittent explosive disorder
  Intermittent explosive disorder
  Intermittent explosive disorder is a behavioral disorder characterized by extreme expressions of anger, often to the point of violence, that are disproportionate to the situation at hand. It is currently categorized in the Diagnostic and Statistical Manual of Mental Disorders as an impulse...
  
  

M

• Major depressive disorder
• Major depressive episode
  Major depressive episode
  A major depressive episode is the cluster of symptoms of major depressive disorder. The description has been formalised in psychiatric diagnostic criteria such as the DSM-IV and ICD-10, and is characterized by severe, highly persistent depression, and a loss of interest or pleasure in everyday...
  
  
• Male erectile disorder
• Malingering
  Malingering
  Malingering is a medical term that refers to fabricating or exaggerating the symptoms of mental or physical disorders for a variety of "secondary gain" motives, which may include financial compensation ; avoiding school, work or military service; obtaining drugs; getting lighter criminal sentences;...
  
  
• Manic episode
• Mathematics disorder
• Medication-related disorder
• Megalomania
  Megalomania
  Megalomania is a psycho-pathological condition characterized by delusional fantasies of power, relevance, or omnipotence. 'Megalomania is characterized by an inflated sense of self-esteem and overestimation by persons of their powers and beliefs'...
  
  
• Melancholia
  Melancholia
  Melancholia , also lugubriousness, from the Latin lugere, to mourn; moroseness, from the Latin morosus, self-willed, fastidious habit; wistfulness, from old English wist: intent, or saturnine, , in contemporary usage, is a mood disorder of non-specific depression,...
  
  

• Mental retardation
  Mental retardation
  Mental retardation is a generalized disorder appearing before adulthood, characterized by significantly impaired cognitive functioning and deficits in two or more adaptive behaviors...
  
  
• Mixed episode
• Mixed receptive-expressive language disorder
  Mixed receptive-expressive language disorder
  Mixed receptive-expressive language disorder is a communication disorder in which both the receptive and expressive areas of communication may be affected in any degree, from mild to severe....
  
  
• Mood disorder
  Mood disorder
  Mood disorder is the term designating a group of diagnoses in the Diagnostic and Statistical Manual of Mental Disorders classification system where a disturbance in the person's mood is hypothesized to be the main underlying feature...
  
  
• Mood episode
• Motor skills disorder
  Motor skills disorder
  Motor skills disorder is a human developmental disorder that impairs motor coordination in daily activities. It is neurological in origin...
  
  
• Munchausen's syndrome
• Munchausen's syndrome by proxy
• Multi-Personality Disorder (better known as Dissociative Identity Disorder
  Dissociative identity disorder
  Dissociative identity disorder is a psychiatric diagnosis and describes a condition in which a person displays multiple distinct identities , each with its own pattern of perceiving and interacting with the environment....
  
  )

N

• Narcissistic personality disorder
  Narcissistic personality disorder
  Narcissistic personality disorder is a personality disorder in which the individual is described as being excessively preoccupied with issues of personal adequacy, power, prestige and vanity...
  
  
• Narcolepsy
  Narcolepsy
  Narcolepsy is a chronic sleep disorder, or dyssomnia, characterized by excessive sleepiness and sleep attacks at inappropriate times, such as while at work. People with narcolepsy often experience disturbed nocturnal sleep and an abnormal daytime sleep pattern, which often is confused with insomnia...
  
  
• Neglect of child

• Neuroleptic-related disorder
• Nicotine-related disorder
• Nightmare disorder
  Nightmare disorder
  'Nightmare disorder', or 'dream anxiety disorder', is a [sleep] disorder characterized by frequent [nightmares]. The nightmares, which often portray the individual in a situation that jeopardizes their life or personal safety, usually occur during the second half of the sleeping process, called the...
  
  

O

• Obsessive-compulsive disorder
  Obsessive-compulsive disorder
  Obsessive–compulsive disorder is an anxiety disorder characterized by intrusive thoughts that produce uneasiness, apprehension, fear, or worry, by repetitive behaviors aimed at reducing the associated anxiety, or by a combination of such obsessions and compulsions...
  
   (OCD)
• Obsessive-compulsive personality disorder
  Obsessive-compulsive personality disorder
  Obsessive–compulsive personality disorder is a personality disorder characterized by a pervasive pattern of preoccupation with orderliness, perfectionism, and mental and interpersonal control at the expense of flexibility, openness, and efficiency.- Signs and symptoms :The primary symptoms of OCPD...
  
   (OCPD)
• Occupational problem

• Oneirophrenia
  Oneirophrenia
  Oneirophrenia is a hallucinatory, dream-like state caused by several conditions such as prolonged sleep deprivation, sensory deprivation, or drugs . From the Greek words "ὄνειρο" and "φρενός"...
  
  
• Opioid-related disorder
• Oppositional defiant disorder
  Oppositional defiant disorder
  Oppositional defiant disorder is a diagnosis described by the Diagnostic and Statistical Manual of Mental Disorders as an ongoing pattern of disobedient, hostile and defiant behavior toward authority figures which goes beyond the bounds of normal childhood behavior...
  
   (ODD)

P

• Pain disorder
  Pain disorder
  Pain disorder is when a patient experiences chronic pain in one or more areas, and is thought to be caused by psychological stress. The pain is often so severe that it disables the patient from proper functioning. Duration may be as short as a few days or as long as many years. The disorder may...
  
  
• Panic disorder
  Panic disorder
  Panic disorder is an anxiety disorder characterized by recurring severe panic attacks. It may also include significant behavioral change lasting at least a month and of ongoing worry about the implications or concern about having other attacks. The latter are called anticipatory attacks...
  
  
• Paranoid personality disorder
  Paranoid personality disorder
  Paranoid personality disorder is a psychiatric diagnosis characterized by paranoia and a pervasive, long-standing suspiciousness and generalized mistrust of others....
  
  
• Parasomnia
  Parasomnia
  For the 2008 horror film, see Parasomnia Parasomnias are a category of sleep disorders that involve abnormal and unnatural movements, behaviors, emotions, perceptions, and dreams that occur while falling asleep, sleeping, between sleep stages, or during arousal from sleep...
  
  
• Parent-child relational problem
• Partner relational problem
• Pathological gambling
• Perfectionism
  Perfectionism (psychology)
  Perfectionism, in psychology, is a belief that a state of completeness and flawlessness can and should be attained. In its pathological form, perfectionism is a belief that work or output that is anything less than perfect is unacceptable...
  
  
• Personality change due to a general medical condition
• Personality disorder
  Personality disorder
  Personality disorders, formerly referred to as character disorders, are a class of personality types and behaviors. Personality disorders are noted on Axis II of the Diagnostic and Statistical Manual of Mental Disorders or DSM-IV-TR of the American Psychiatric Association.Personality disorders are...
  
  
• Pervasive developmental disorder
  Pervasive developmental disorder
  Pervasive developmental disorders is a diagnostic category refers to a group of disorders characterized by delays or impairments in communication, social behaviors, and cognitive development.Pervasive developmental disorders include Autism, Asperger's syndrome, Rett's syndrome, Childhood...
  
   (PDD)
• Phase of life problem
• Phencyclidine
  Phencyclidine
  Phencyclidine , commonly initialized as PCP and known colloquially as angel dust, is a recreational dissociative drug...
  
   (or phencyclidine-like)-related disorder

• Phonological disorder
• Physical abuse
  Physical abuse
  Physical abuse is abuse involving contact intended to cause feelings of intimidation, injury, or other physical suffering or bodily harm.-Forms of physical abuse:*Striking*Punching*Belting*Pushing, pulling*Slapping*Whipping*Striking with an object...
  
  
• Pica
  Pica (disorder)
  Pica is characterized by an appetite for substances largely non-nutritive . For these actions to be considered pica, they must persist for more than one month at an age where eating such objects is considered developmentally inappropriate...
  
  
• Polysubstance-related disorder
• Post-traumatic embitterment disorder
  Post-traumatic embitterment disorder
  Post-traumatic embitterment disorder is a proposed disorder modeled after post-traumatic stress disorder. Some psychiatrists are proposing this as a mental disorder because they believe there are people who have become so bitter they can barely function.-Scientific History: First Described in...
  
   (PTED)
• Posttraumatic stress disorder (PTSD)
• Premature ejaculation
  Premature ejaculation
  Premature ejaculation is a condition in which a man ejaculates earlier than he or his partner would like him to. Premature ejaculation is also known as rapid ejaculation, rapid climax, premature climax, or early ejaculation....
  
  
• Primary hypersomnia
• Primary insomnia
• Psychological factor affecting medical condition
• Psychotic disorder
• Pyromania
  Pyromania
  Pyromania in more extreme circumstances can be an impulse control disorder to deliberately start fires to relieve tension or for gratification or relief. The term pyromania comes from the Greek word πῦρ . Pyromania and pyromaniacs are distinct from arson, the pursuit of personal, monetary or...
  
  

R

• Reactive Attachment Disorder of infancy or early childhood
• Reading disorder
• Relational disorder
  Relational disorder
  According to Michael First, MD, of the DSM-5 working committee the locus of a relational disorder, in contrast to other DSM-IV disorders, "is on the relationship rather than on any one individual in the relationship."...
  
  

• Residual schizophrenia
• Rett's disorder
• Rumination syndrome

S

• Schizoaffective disorder
  Schizoaffective disorder
  Schizoaffective disorder is a psychiatric diagnosis that describes a mental disorder characterized by recurring episodes of elevated or depressed mood, or of simultaneously elevated and depressed mood, that alternate with, or occur together with, distortions in perception.Schizoaffective disorder...
  
  
• Schizoid personality disorder
  Schizoid personality disorder
  Schizoid personality disorder is a personality disorder characterized by a lack of interest in social relationships, a tendency towards a solitary lifestyle, secretiveness, emotional coldness, and sometimes apathy, with a simultaneous rich, elaborate, and exclusively internal fantasy world...
  
  
• Schizophrenia
  Schizophrenia
  Schizophrenia is a mental disorder characterized by a disintegration of thought processes and of emotional responsiveness. It most commonly manifests itself as auditory hallucinations, paranoid or bizarre delusions, or disorganized speech and thinking, and it is accompanied by significant social...
  
  
• Schizophreniform disorder
  Schizophreniform disorder
  Schizophreniform disorder is a mental disorder diagnosed when symptoms of schizophrenia are present for a significant portion of the time within a one-month period, but signs of disruption are not present for the full six months required for the diagnosis of schizophrenia.The symptoms of both...
  
  
• Schizotypal personality disorder
  Schizotypal personality disorder
  Schizotypal personality disorder, or simply schizotypal disorder, is a personality disorder that is characterized by a need for social isolation, anxiety in social situations, odd behavior and thinking, and often unconventional beliefs.-Genetic:...
  
  
• Sedative-, hypnotic-, or anxiolytic-related disorder
• Selective mutism
  Selective mutism
  Selective mutism is an anxiety disorder in which a person, most often a child, who is normally capable of speech is unable to speak in given situations, or to specific people...
  
  
• Separation anxiety disorder
  Separation anxiety disorder
  Separation anxiety disorder is a psychological condition in which an individual experiences excessive anxiety regarding separation from home or from people to whom the individual has a strong emotional attachment...
  
  
• Severe mental retardation
• Shared psychotic disorder

• Sleep disorder
  Sleep disorder
  A sleep disorder, or somnipathy, is a medical disorder of the sleep patterns of a person or animal. Some sleep disorders are serious enough to interfere with normal physical, mental and emotional functioning...
  
  
• Sleep terror disorder
• Sleepwalking disorder
• Somatization disorder
  Somatization disorder
  Somatization disorder is a psychiatric diagnosis applied to patients who persistently complain of varied physical symptoms that have no identifiable physical origin...
  
  
• Somatoform disorder
  Somatoform disorder
  In psychology, a somatoform disorder is a mental disorder characterized by physical symptoms that suggest physical illness or injury - symptoms that cannot be explained fully by a general medical condition, direct effect of a substance, or attributable to another mental disorder . The symptoms that...
  
  
• Stereotypic movement disorder
  Stereotypic movement disorder
  Stereotypic movement disorder is a disorder of childhood involving repetitive, nonfunctional motor behavior , that markedly interferes with normal activities or results in bodily injury, and persists for four weeks or longer. The behavior must not be due to the direct effects of a substance or...
  
  
• Stuttering
  Stuttering
  Stuttering , also known as stammering , is a speech disorder in which the flow of speech is disrupted by involuntary repetitions and prolongations of sounds, syllables, words or phrases, and involuntary silent pauses or blocks in which the stutterer is unable to produce sounds...
  
  
• Substance-related disorder

T

• Tardive dyskinesia
  Tardive dyskinesia
  Tardive dyskinesia is a difficult-to-treat form of dyskinesia that can be tardive...
  
  
• Tic disorder
  Tic disorder
  Tic disorders are defined in the Diagnostic and Statistical Manual of Mental Disorders based on type and duration of tics...
  
  
• Tourette's syndrome

• Transient tic disorder
• Trichotillomania
  Trichotillomania
  Trichotillomania, which is classified as an impulse control disorder by DSM-IV, is the compulsive urge to pull out one's own hair leading to noticeable hair loss, distress, and social or functional impairment. It is often chronic and difficult to treat....