Lichen sclerosus et atrophicans (LSA) is a chronic, inflammatory skin disease of unknown etiology, characterized by atrophy.
We report a case of LSA with frontoparietal distribution, mimicking scleroderma en coup de sabre, causing scarring alopecia. The case was associated with Borrelia infection. The lesion improved with 2 cycles of antibiotic therapy with ceftriaxone 2 gr/day i.v for 21 days associated with UVA-1 therapy and local and systemic vitamin E supply (400 mg 2x/day per os for 3 months). This case stresses the impor- tance of identifying clinical manifestations associated with Lyme disease and the use of tissue PCR to detect borrelial DNA in patients with these lesions, but characterized by nega- tive serology for Borrelia.
