Omid Zargari, MD, FAAD:

Benign primary follicular mucinosis is an uncommon inflammatory disorder, described in 1957 by Pinkus. The majority of cases are children.

Clinically, it presents as an acute or subacute  eruption, mostly on the head and neck and associated with alopecia.

Histologically, the epithelial cells of the sebaceous glands and outer root sheaths are disrupted with formation of cystic spaces and mucin deposition.

There is no specific therapy and a wait-and-see approach is recommended as many cases resolve spontaneously.

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