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.

While it’s difficult to tell how a certain medication will affect an individual, the following types of drugs might lower libido in some people.  (Please note that this is not an exhaustive list.)

Penis captivus occurs when a man is unable to withdraw his penis from a woman’s vagina.

It’s possible.

This is a difficult question to answer, as partners’ ideas of pleasure are highly personal. Some enjoy sex with a circumcised man; others like being with an uncircumcised man. Still others may have no preference at all.

Circumcision is a surgical procedure that involves removing the foreskin of the penis, either partially or completely.