Parry–Romberg syndrome—Still progressing over 20 years of disease course

Abstract Parry–Romberg syndrome presents with atrophy of one‐half of the face involving skin, soft tissue, muscle, and bone. It usually progresses slowly over 2–20 years and finally stabilizes. Neuropsychiatric abnormalities are subtle, seen in about 10% of the patients, and include cognitive disturbances, aphasia, hallucination, and other psychiatric disorders. We describe the case of a young female who had progressive brain atrophy over 20 years of disease course and presented with focal seizures and recent onset progressive cognitive impairment.