Androgenic alopecia is a common physiologic disorder that is induced by androgens in genetically predisposed persons. It is described by dermatologists as a disorder of perception. Its original classification in men was made by Hamilton in 1951 and modified by Norwood in 1975. Ludwig's classification of androgenic alopecia in women was made in 1977. More study on this subject is needed with respect to searching for a medication to promote hair growth.