A Survey for Transverse Nasal Groove.

Out of 3000 consecutive subjects surveyed for the typical lesion of transverse nasal groove, 180 were found to have the characteristic lesions. In LU patients, the floor of the groove was studded with patulous hair follicles, greasy sale and black comedones. The age of the patients varied from 16 to 45 years, the majority belonged to the 20 to 30 age group. Family occurrence of the groove was noted 'in only 7.Seboffhoeic dermatitis, pityriasis versicolor and acne vulgaris were the commonly associated diseases.