impotence
Variant: impotency
(im'pŏt-ĕns 
)
(im'pŏt-ĕn-sē )
[ impotent ]
A weakness, esp. pert. to the inability of a man to achieve or maintain an erection. SYN: erectile dysfunction.
SEE: penile prosthesis; sex therapy; sexual dysfunction; sexual stimulant.
Treatment: Sildenafil, alprostadil, and several other drugs are used to treat erectile dysfunction. Penile vacuum pumps and penile prostheses are among the nonpharmacological alternatives.
atonic i.Impotence resulting from paralysis of nerves supplying the penis.
functional i.Impotence not due to an organic or anatomical defect; usually of psychogenic origin. The individual may experience impotence with one or more sexual partners, but not with others.
neurogenic i.Impotence due to central nervous system lesions, paraplegia, or diabetic neuropathy.
psychic i.Psychogenic impotence.
psychogenic i.Impotence caused by emotional factors rather than organic disease. SYN: psychic impotence .
vasculogenic i.Impotence due to an inadequate supply of arterial blood to the corpora cavernosa of the penis.