Embryology and anatomy of the hair follicle Differentiation of the hair shaft Control of hair growth and pigmentation Clinical tools for assessing hair growth Infectious and physical causes of hair loss, and scalp conditions of significance Hair shaft defects Hereditary and congenital hair loss Alopecia areata Anagen effluvium Telogen effluvium Androgenetic alopecia Cicatricial alopecia Hypertrichosis Hirsutism Surgical approach to hair loss Hair care products Hair care in blacks.