Acne is a multifactorial disorder reflecting the role of infection, ab
normal keratinization and immunologic reaction, as well as hormonal in
fluences, on the pilosebaceous unit. Clinical studies have correlated
elevated levels of androgens, originating in both the adrenal glands a
nd ovaries, with acne. These include total and free testosterone, Delt
a(4)-androstenedione, dehydroepiandrosterone and it's sulfate, and low
levels of sex hormone binding globulin. The pathogenesis of acne init
iation in childhood has been linked to rising serum levels of dehydroe
piandrosterone sulfate. Hirsutism has been more directly correlated wi
th increased levels of serum androgens, notably free testosterone. Und
erlying causes of elevated androgens in both disorders include very ra
re tumors, partial or late-onset forms of congenital adrenal hyperplas
ia, developmental adrenal abnormalities and, most commonly, polycystic
ovary syndrome. Early acne treatment may include topical benzoyl pero
xide, antibiotics, and tretinoin. More severe disease can be treated s
ystemically (with antibiotics and/or isotretinoin). Very-low-dose cort
icosteroids can be used to eliminate the adrenal component of hyperand
rogenism. Oral contraceptives, especially those that contain low-andro
genic progestins, can reduce excessive androgens from any source and s
pecifically suppress the ovary in polycystic ovary syndrome. Gonadotro
pin-releasing hormone agonists, with or without estrogen supplementati
on, and systemic or topical antiandrogens may play a more important ro
le in the future.