[Spironolactone in idiopathic hirsutism, clinical and biological evaluation of treatment]

Ten midly hirsute women with normal serum levels of testosterone were treated with spironolactone (100 mg die), and the effectiveness of this dose-schedule regimen was evaluated after six months of therapy. Hirsutism subsided partly in all women. We estimated however, that in 6 of the 10 women, the clinical benefit was out weighed by the side effects and other drawbacks of a long term therapy and their medication was then stopped 6 months after its initiation. The changes induced on the pituitary function were evaluated by measuring basal serum T3 T4 and basal and stimulated (TRH-LHRH) TSH, PRL, FSH and LH, prior to and after one month of therapy. Spironolactone induced a greater response of TSH to TRH (p less than .025) but no change in T3 T4, PRL, FSH and LH. These data suggest that changes in TSH response are not explained by the speculated intrinsic oestrogenic activity of spironolactone but rather by a selective interaction with TSH secreting cells. We conclude that spironolactone therapy should not be recommended for the large category of normal women complaining of slight increase of facial hair.