What conditions affect penis health and function?

Problems related to sexual function, sexual activity and penis health include:

• Erectile dysfunction. This condition makes it difficult to get and keep an erection firm enough for sex.
• Ejaculation problems. These include the inability to ejaculate, premature ejaculation, delayed ejaculation, painful ejaculation, reduced ejaculation or retrograde ejaculation. Retrograde ejaculation happens when semen enters the bladder instead of going out through the penis.
• Anorgasmia. This is the inability to achieve an orgasm despite enough stimulation.
• Decreased libido. With this condition, desire for sex is lower than usual.
• Sexually transmitted infections. These include genital warts, gonorrhea, chlamydia, syphilis and genital herpes. These infections can cause painful urination, penis discharge, and sores or blisters on the penis or in the genital area.
• Yeast infection. This condition can cause inflammation of the head of the penis, also called balanitis, a rash, differently colored patches of skin on the penis, itching or burning, and a white discharge.
• Peyronie disease. In this condition, scar tissue develops inside the penis. This often results in bent or painful erections.
• Penile fracture. This rupture of the fibrous, tubelike tissue in the penis happens during an erection. It is usually caused by an erect penis forcefully striking the female pelvis during sex.
• Priapism. This condition is a lasting and usually painful erection that isn't caused by sexual stimulation or arousal.
• Phimosis. In this condition, the foreskin of an uncircumcised penis can't be retracted from the penis head. This can cause painful urination and erections.
• Paraphimosis. This happens when the foreskin can't be returned to its usual position after being retracted. This condition can cause painful swelling of the penis and impaired blood flow.
• Penile cancer. The cancer may begin as a blister on the foreskin, head or shaft of the penis. It then becomes a wartlike growth that discharges watery pus.