Spot Dx — A teen’s thinning hair raises eyebrows

Ali, a 19-year-old university student, presents for review of progressive thinning of his eyebrows.

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Ali, a 19-year-old university student, presents for review of progressive thinning of his eyebrows.

There is associated facial erythema and ‘bumpy spots’ on the forehead and upper arms, present since adolescence.