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January 1979

Idiopathic Unilateral Facial Hirsutism: Report of a Case

Author Affiliations

From the Department of Dermatology, Gundersen Clinic Ltd, La Crosse, Wis. Dr Thomsen is now with the Department of Dermatology, University of Iowa Hospitals and Clinics, Iowa City.

Arch Dermatol. 1979;115(1):99-100. doi:10.1001/archderm.1979.04010010067023

Most of the normal cutaneous processes, including hair growth, show a bilateral symmetry. We report a case of striking asymmetry of facial hair in a nondermatomal pattern.

Report of a Case  A 50-year-old woman of English heritage had a five- or six-year history of asymptomatic hair growth localized to the left side of the face. She denied any topical therapy, trauma, or facial surgery. She is gravida 6, para 6, and had a bilateral salpingo-oophorectomy in 1963. There is no family history of hirsutism.On physical examination she had dense terminal hair growth over the left cheek that extended exactly to the midline above the mouth, but spared the chin (Fig 1 and 2), in portions of the second and third divisions of the trigeminal nerve distribution. The face appeared symmetrical, and the skin on both sides was of normal texture and pigmentation. Vellous hair growth on the right cheek