JAMA Dermatology Clinicopathological Challenge
A Case of Linear Depression on ForeheadA Case of Linear Depression on Forehead—CaseA Case of Linear Depression on Forehead—Diagnosis
JAMA Dermatology 10.1001/jamadermatol.2026.0112April 15, 2026 at 11:00 AM EDT
A man in his 30s presented with a linear atrophic plaque on his forehead that had increased in size over 3 years; biopsy found loss of sebaceous glands, preserved eccrine glands, and thickened collagen bundles. What is your diagnosis?
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