Alopecia y fármacos

La alopecia difusa engloba una serie de cuadros de etiologia diversa y mecanismos etiopatogenicos dificiles de precisar. Variados farmacos tienen un papel preponderante en su produccion. Se revisa la alopecia o efluvio anagenico, las causas y los multiples agentes famacologicos implicados en su produccion; esta es la forma mas representativa de la perdida repentina de cabello, mientras que el efluvio telogenico es la forma mas frecuente de alopecia difusa y la mas importante despues de la alopecia androgenetica. Se puntualizan los mecanismos etiopatogenicos mas conocidos segun Headington y se revisa el amplio arsenal farmacologico que puede causarlo. Abstract Diffuse alopecia includes a series of aspects of varying etiology, as well as ethiopathogenic mechanisms difficult to determine. Several drugs have an important rote in its occurrence. Causes of alopecia oragenic effluvium are revised, as well as the multiple pharmacologic agents involved in its production. This is the most representative form of sudden hair loss, while telogenic effluvium is the most frequent form of diffuse alopecia, and the most important after androgenetic alopecia. The most widely known ethiopathogenic mechanisms according to Headington are described, and the wide pharmacologic arsenal that can produce them it is revised.