Clinical manifestation

Acute form: relatively sudden onset of diffuse scalp hair loss, usually after a metabolic or physiologic stress 1-6 months before the start of the hair shedding; inciting stresses: febrile illness, major injury, change in diet, pregnancy and delivery, and beginning a new medication Chronic form: hair shedding lasting longer than 6 months; onset often insidious; inciting causes: chronic illness such as malignancy, particularly lymphoproliferative malignancy; any chronic debilitating illness such as systemic lupus erythematosus;

560 Temporal arteritis end-stage renal disease or liver disease; hormonal changes; diet changes; heavy metal intoxication

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