The skin is often damaged by friction, environmental factors, chemicals, and physical agents that lead to irritation, as seen here. Note the triggered inflammation in all three patients. Often it is overlooked in darker skin tones and appears as a deep brown, purple, or even gray. Usually irritant contact dermatitis is confined to the contact site.

Intertrigo affects the skin folds and it can be multifactorial. In darker skin tones, erythema tends to present as thin, dark brown plaques which might persist for several months despite the resolution of the underlying etiology causing intertrigo. Notice the satellite pustules in some of the inserts suggestive of candidal infection.

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