Some armpit rashes can last a few hours and disappear if an irritant is removed. Others occur with a chronic condition, such as psoriasis, and may come and go for many years. Treatments for arm ...

A maculopapular, symmetric rash with plaques located on sun-exposed areas (hands, forearms, face and upper torso, sparing the abdomen, lower limbs and arm flexures) had appeared a few hours before ...