When a woman goes through menopause, her estrogen levels decrease along with the levels of other sex-steroid hormones. These decreases can lead to changes in certain areas of her body, like the vagina, vulva, and bladder.

When a man has Peyronie’s disease, areas of hardened scar tissue called plaques form on his penis. These plaques make the penis less flexible and cause it to bend. If the curve is especially severe, the man may not be able to have intercourse at all.

The uterus is a small fist-sized organ located above a woman’s vagina. Its primary role is to nourish a developing fetus during pregnancy.

A penile prosthesis is a surgically implanted device that allows a man with erectile dysfunction to have erections again. Generally, the procedure is considered if a man is unsuccessful with other treatments, such as oral medications.

Hematospermia (sometimes spelled haematospermia) refers to blood in the semen. Men may notice that their semen is bloodstained, pink, or reddish-brown. But sometimes the blood is microscopic and cannot be seen at all.

An ultrasound is an imaging test that uses sound waves to produce pictures of internal organs, giving doctors a more detailed view.

When a man has problems with erections, it is sometimes difficult to know if the cause(s) are physical, psychological, or both. The nocturnal penile tumescence (NPT) test can give the doctor some clues.

Sexsomnia, sometimes called “sleep sex” is a sleep disorder. A person with sexsomnia acts out sexually while sleeping. He or she might masturbate, fondle a bed partner, give oral sex, engage in intercourse, or reach orgasm while asleep and have no recollection of this activity the next morning.

Sexsomnia refers to a sleep disorder that causes a person to act out sexually while asleep.

Penile cancer is a rare form of cancer that affects a man’s penis.

Located in the scrotum, the testicles (also called the testes) are a pair of male reproductive organs that produce sperm cells and testosterone, the primary male sex hormone and anabolic steroid which contributes to a man’s libido and helps with erections.

New research suggests that the size and location of a woman’s clitoris may affect her ability to reach orgasm.