Abstract:Pigmented transverse nasal band/groove is an asymptomatic benign condition, characterized by the development of erythematous to hyperpigmented, well-demarcated, transverse groove at the junction of middle and lower two-third of the nasal dorsum. Although the pathogenesis is unclear, embryologic origin seems to be the most plausible hypothesis. This condition is often associated other related dermatological conditions such as milia, comedones, seborrheic dermatitis and atopic dermatitis. Diagnosis is mostly cli… Show more
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