Dr. Alison Ehrlich, a Board-certified dermatologist, practices at Foxhall Dermatology and Metroderm. She specializes in the diagnosis and treatment of allergic contact dermatitis as well as psoriasis. Appointments can be booked at both locations and through Zocdoc. Geriatric Dermatology Dermatologist Skin Specialist Cosmetic Dermatology Skin Cancer Scars Stretch Marks Laser Skin Treatment Botox Skin Tightening