When hirsutism is recognised as an endocrinopathy, a rational approach to treatment can be devised. In simple hirsutism, the ovaries are the most likely source of excess androgen production, and demonstrate a wide range of pathology. The adrenal cortex is sometimes of prime importance but is more frequently a contributor of androgen precursors. Long term hormonal suppressive treatment will successfully control hirsutism in the majority. Antiandrogens constitute a potential treatment for future years; physical methods of depilation remain as useful adjuncts to medical therapy.