Sudden Hair "Felting" during Styling Procedure: The Puzzle is Solved.

Acute scalp hair "felting" is a rare acquired condition that presents with sudden severe twisting, entangling, and matting of scalp hair into a stiff tightly packed mass, in otherwise healthy individuals. In such conditions, the mechanism of hair matting is almost like the process of "felting" in wool and textile industry, where adjacent fibers are compacted together in a warm liquid medium. Herein, a case of acute hair "felting" during styling practice is discussed with the possible predisposing factors, prophylaxis, and treatment.