Psoriasis.
Is the eruption of psoriasis always dry?
Yes.
What course does psoriasis pursue?
As a rule, eminently chronic. Patches may remain almost indefinitely, or may gradually disappear and new lesions appear elsewhere, and so the disease may continue for months and, sometimes, for years; or, after continuing for a longer or shorter period, may subside and the skin remain free for several months or one or two years, and, in rare instances, may never return.
Fig. 18.
Psoriasis.