Sudden whitening of hair.
D000342:Affective Symptoms / Q000150:complications; D000506:Alopecia Areata / Q000150:complications / Q000209:etiology; D006197:Hair; D006801:Humans; D010859:Pigmentation Disorders / Q000209:etiology*; D012769:Shock / Q000150:complications; D014820:Vitiligo / Q000150:complications