Amicrobial pustulosis of the folds
The pustules in APF are sterile, but the lesions can become eroded and secondarily infected. Diagnosis of APF is based largely on clinical presentation and exclusion of other more common diagnoses.
The disease is generally chronic with frequent relapses despite treatment. The disease course of APF does not parallel that of any associated autoimmune disease.
D89.89 – Other specified disorders involving the immune mechanism, not elsewhere classified
95329006 – Autoimmune skin disease
Differential Diagnosis & Pitfalls