Clinical and endocrine effects of finasteride, a 5 alpha-reductase inhibitor, in women with idiopathic hirsutism.
OBJECTIVE
To evaluate the effects of long-term administration of finasteride on hirsutism score, basal gonadotropin, and androgen secretion in women with idiopathic hirsutism.


METHODS
Randomized single-blinded study.


METHODS
Eighteen patients with moderate-severe hirsutism were recruited for the study.


METHODS
Nine hirsute patients received 7.5 mg/d oral finasteride for a period of 9 months whereas the other nine were treated with placebo. Hirsutism score, serum basal gonadotropin, androgens, estrogen, and sex hormone-binding globulin (SHBG) levels were evaluated in all patients before treatment and every 3 months during treatment.


RESULTS
After 6 and 9 months of treatment, the hirsutism score improved significantly in the patients receiving finasteride, whereas no significant modifications were observed in patients treated with placebo. The side effects observed were headache and depression of modest entity during the 1st month of treatments, whereas libido did not change. Serum levels of LH, FSH, androstenedione, unbound T, DHEAS, E2, 17 alpha-hydroxyprogesterone, and SHBG did not change during therapy. Hirsute patients treated with finasteride exhibited a marked decrease of dihydrotestosterone and a significant increase of T serum levels from the 3rd and 6th months of treatment, respectively.


CONCLUSIONS
Finasteride decreased the hirsutism score of patients affected by idiopathic hirsutism with few side effects during treatment. No modification of libido was observed.
Ciotta
L
L
Department of Obstetrics and Gynaecology, University of Catania, Italy.
Cianci
A
A
Calogero
A E
AE
Palumbo
M A
MA
Marletta
E
E
Sciuto
A
A
Palumbo
G
G
D058891:5-alpha Reductase Inhibitors; D000328:Adult; D000704:Analysis of Variance; D013196:Dihydrotestosterone / Q000097:blood; D005260:Female; D018120:Finasteride / Q000627:therapeutic use*; D005640:Follicle Stimulating Hormone / Q000097:blood; D006628:Hirsutism / Q000097:blood / Q000188:drug therapy*; D006801:Humans; D007986:Luteinizing Hormone / Q000097:blood; D016037:Single-Blind Method; D013739:Testosterone / Q000097:blood
D058891:5-alpha Reductase Inhibitors; D013196:Dihydrotestosterone; D013739:Testosterone; D018120:Finasteride; D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone