A verrucous auricular plaque: A diagnostic challenge

Nevus sebaceus of Jadassohn is a congenital hamartoma typically located on the scalp and face. Auricular involvement is uncommon and may lead to diagnostic confusion. We report a 31-year-old woman presenting with a three-year history of a slowly enlarging verrucous pigmented tumor in the retroauricular region. Clinical and dermoscopic findings suggested a complex verrucous lesion. Differential diagnoses included seborrheic keratosis, verruca, and verrucous squamous cell carcinoma. Dermoscopy can assist in distinguishing these lesions from other benign or malignant skin conditions, while histopathology remains crucial for a definitive diagnosis for nevus sebaceus of Jadassohn.
This case highlights an unusual auricular presentation of nevus sebaceus, emphasizing the importance of histopathological confirmation in atypical locations.