ABSTRACT
It is difficult to give a true incidence of the remission rate of psoriasis, as a large proportion of individuals with slight clinical involvement do not attend dermatological clinics, or even any doctor. Therefore, most studies of the natural history are based on results from specialist centers where the more severe forms of the disease are seen. Psoriasis tends to run a variable course; it may have spontaneous remissions which are temporary or permanent, therapy-induced remissions, which again may be temporary or permanent, or it may run a persistent course. The interval
of time between the episodes of psoriasis, in those who have remissions, may vary from a few months to several years.
