What does it look like?

Subcorneal pustular dermatosis is characterised by numerous soft pustules at the skin surface. They usually appear on the trunk, particularly in the skin folds such as the armpits and groin. They may appear on otherwise normal skin, but there are often within a red patch. The pustules resolve over a few days and are replaced by fine scale before there is another relapse and new pustules form again. The lesions are sometimes itchy, but generally the patient is otherwise well. It may flare-up for a few weeks and then clear up for months or years before reappearing. The process may be repeated over many years.

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