Lichenoid eruption
Encyclopedia
A lichenoid eruption is a skin disease characterized by damage and infiltration between the epidermis and dermis
.
Examples include lichen planus
, lichen sclerosus
and lichen nitidus
. It can also be associated with abrasion or drug use. It has been observed in conjunction with the use of proton pump inhibitor
s.
The term "lichenoid" derives from a resemblance to a lichen
.
Dermis
The dermis is a layer of skin between the epidermis and subcutaneous tissues, and is composed of two layers, the papillary and reticular dermis...
.
Examples include lichen planus
Lichen planus
Lichen planus is a chronic mucocutaneous disease that affects the skin, tongue, and oral mucosa. The disease presents itself in the form of papules, lesions, or rashes. Lichen planus does not involve lichens, the fungus/algae symbionts that often grow on tree trunks; the name refers to the dry and...
, lichen sclerosus
Lichen sclerosus
Lichen sclerosus is an uncommon disease of unknown cause that results in white patches on the skin, which may cause scarring on and around genital skin....
and lichen nitidus
Lichen nitidus
Lichen nitidus is a chronic inflammatory disease of unknown etiology characterized by 1-2 mm, discrete and uniform, shiny, flat-topped, pale flesh-colored or reddish-brown papules that may appear as hypopigmented against dark skin. Occasionally, minimal scaling is present or can be induced by...
. It can also be associated with abrasion or drug use. It has been observed in conjunction with the use of proton pump inhibitor
Proton pump inhibitor
Proton-pump inhibitors are a group of drugs whose main action is a pronounced and long-lasting reduction of gastric acid production. They are the most potent inhibitors of acid secretion available today. The group followed and has largely superseded another group of pharmaceuticals with similar...
s.
The term "lichenoid" derives from a resemblance to a lichen
Lichen
Lichens are composite organisms consisting of a symbiotic organism composed of a fungus with a photosynthetic partner , usually either a green alga or cyanobacterium...
.