Secondary Ekbom syndrome to organic disorder: report of three cases.

The Ekbom syndrome, also known as delusion of parasitosis or acarophobia is an obsessive phobic state in which the patient thinks, imagines or believes that his or her skin is infested by parasites. In the hallucinatory state, he/she removes parts of the skin, identifying them as parasites. It can be primary or secondary to other organic or psychiatric diseases. Generally speaking these patients take a long time to seek for medical support and the dermatologist is almost always the first physician to see them. Here we describe three patients with delusional parasitosis associated with organic disorders.