LATE-ONSET NEVUS COMEDONICUS IN AN ADULT PATIENT WITH DIABETES MELLITUS

Nevus comedonicus (NC) is classically defined as a malformation of the pilosebaceous unit characterized by dilated follicular ostia and comedone-like hyperkeratotic follicular plugs. In addition to the classical type, inflammatory NC (NC suppurativa) is accompanied by inflammatory lesions and has been rarely reported in the literature. We report a case of late-onset NC suppurativa on the midline of the forehead in a 47-year-old male patient with diabetes mellitus (DM). Skeletal, central nervous system, dental, and ophthalmologic examinations for NC syndrome were normal. The coexistence of NC suppurativa and DM may not be incidental. Regular monitoring of patients with NC suppurativa for signs of DM could be beneficial. Future studies should include diagnostic tests for DM in all patients with NC suppurativa to clarify the potential link with DM.