A psychic vampire is a person or being who claims to feed off the "life force

Life force

Life force is a concept of spiritual energy.Life force may also refer to:* Life Force , the American version of the arcade game Salamander* Lifeforce , a 1985 science fiction-horror film...

" of other living creatures. Psychic vampires are represented in the occult beliefs of various cultures and in fiction. There is no medical recognition or scientific consensus supporting this claim.

A 2007 scholarly survey carried out upon people claiming to be vampires, either psychic or sanguinarian (blood drinkers) that showed anecdotal evidence

Anecdotal evidence

The expression anecdotal evidence refers to evidence from anecdotes. Because of the small sample, there is a larger chance that it may be true but unreliable due to cherry-picked or otherwise unrepresentative of typical cases....

 of a higher than normal incidences of certain illnesses and conditions such as anemia

Anemia

Anemia is a decrease in number of red blood cells or less than the normal quantity of hemoglobin in the blood. However, it can include decreased oxygen-binding ability of each hemoglobin molecule due to deformity or lack in numerical development as in some other types of hemoglobin...

, fibromyalgia

Fibromyalgia

Fibromyalgia is a medical disorder characterized by chronic widespread pain and allodynia, a heightened and painful response to pressure. It is an example of a diagnosis of exclusion...

, and hemophilia.