Psoriasis
Psoriasis is one of the most common and at the same time mysterious diseases. Nobody can tell for sure what the exact causes of psoriasis are. It is only known that it is a systemic disease of noninfectious etiology. The first symptoms of psoriasis are skin exfoliation and itching. Further on, round pink plaques with scales develop on the skin; when scratched droplets of blood appear on them. With time psoriasis may affect significant areas of skin and nails. But the most dangerous form of the diseases is psoriatic arthritis which damages vessels.
Earlier psoriasis had been treated with small doses of arsenic. Presently it is treated with immunosuppressive agents, creams with vitamin A and D and other ointments. If the disease has reached a more serious phase, blood purification and ultraviolet therapy are usually prescribed. But do not think that you can treat yourself by simply attending a solarium, though UV therapy is almost same thing. Ultraviolet in large doses may worsen the course of the disease.
Most researchers have come to the conclusion that the causes of the psoriasis have neurological nature. They advise psoriatic patients to cope with internal problems, fears, sense of guilt and offence, etc. Psychotherapy sessions indeed may give positive effects in the treatment of psoriasis.