Hormonal status and sexual behaviour of 16 men after surgical castration.

Sixteen castrated sexual offenders were investigated blood plasma levels of testosterone [T], dihydrotestosterone [DHT], luteinizing hormone [LH] and follicle-stimulating hormone [FSH]. Levels of T and DHT were significantly decreased in comparison with normal values. Levels of both gonadotropic hormones were significantly elevated. There was a great reduction in the occurrence of orgasm and ejaculation in castrated men. Only six of these sixteen men were able to reach orgasm. Only two of these men stated that they had a small amount of ejaculate by orgasm. Phalloplethysmographic [PPG] examination were provided with electrocapacitance PPG equipment. In only two men investigated was there no specific erotic reactions to visual stimuli. PPG responses in 8 men were small, in 4 average and in 2 only were these reactions high. No changes in sexual orientation were found after castration. In most men after surgical castration sexual arousal is preserved. Low, with low frequency of orgasm and very low sexual interest.