Unusual clinical manifestation of seborrheic keratosis on the scalp successfully treated with topical trichloroacetic acid: an atypical case report

Seborrheic keratoses (SKs) are benign tumor of the skin. They can occur anywhere, except the palms and soles. SKs commonly present as multiple, pigmented papules which is classically described as verrucous stuck-on papules or plaques. A case with multiple nodular appearance is a rare case and to our knowledge has never been reported. Here we report a rare case of multiple SKs on the scalp. On clinical evaluation, multiple, erythematous hyperkeratotic nodules were present. Dermoscopic and histopathological examination supported SKs. The patient was successfully treated with topical application of 80% TCA solution.