Stress basics
Learning Center
Erectile dysfunction
Understand what can cause the inability to get and keep an erection firm enough for sex and the possible treatment options.
Withdrawal method (coitus interruptus)
The withdrawal method — pulling the penis out of the vagina before ejaculation — isn't the most effective birth control. Learn about the pros and cons.
PSA levels: Can they rise after partial prostate removal?
A number of factors can cause PSA levels to rise after surgery for an enlarged prostate.
Peyronie disease
Understand what causes bent and painful erections and learn what treatments are available.
Varicocele
Find out how this condition involving the enlargement of veins in the scrotum can affect sperm quality and production.
Healthy sperm: Improving your fertility
You can take simple steps to have healthy sperm and improve your fertility.
Mayo Clinic Minute: What you should know about bats and rabies
Learn more about the risk of rabies from bats and how to prevent rabies.
Undescended testicle
Learn about causes, complications and treatment of this condition in which one or both testicles aren't in the usual place within the scrotum.
Penis pump
Find out how this device can be placed on your penis to create an erection.
Scrotal masses
Lumps in the scrotum have various causes. Even painless lumps should be checked promptly by a health care professional.
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