Atypical "allergic Crease"

Background: The allergic crease (nasal crease) is a transverse line, common among patients who suffer from allergic rhinitis. Although it is a very prevalent condition, the skin manifestations which accompany this condition have been only sparsely reported.

Main Observation: We describe an 18-year-old man with allergic rhinitis, who developed cornified papules along an allergic crease. Dermoscopic examination revealed oval, slightly raised, gray, sharply demarcated papules. Histopathology revealed seborrheic keratosis like hyperplasia, accompanied by horn cysts.

Conclusions: To our knowledge, cornified papules have not been reported previously along the allergic crease. Considering the fact that allergic rhinitis is a common chronic condition of childhood, increased awareness of the skin manifestations which accompany this condition is essential.