Children's health
Learning Center
Groin pain (male)
Learn more about the causes and symptoms of this type of pain. Also find out how you can treat it at home and when to get a checkup.
HPV infection: A cause of cancer in men?
Learn what types of cancer human papillomavirus can cause and how you can lower your risk.
HPV vaccine: Who needs it, how it works
Learn about how the HPV vaccine works, who needs it and what side effects to expect.
Healthy sperm: Improving your fertility
You can take simple steps to have healthy sperm and improve your fertility.
Henoch-Schonlein purpura
Learn about the symptoms, causes and treatment of this blood vessel disease, also called IgA vasculitis, that causes a purplish rash on the lower legs.
Hormone therapy for prostate cancer
Find out what to expect during testosterone-blocking therapy. Learn about choices, including medicines and surgery.
Hydrocele
Find out more about the symptoms, causes and treatments for this swelling in the scrotum.
Hypospadias
This condition happens before birth. The opening of the urethra is on the underside of the penis instead of at the tip. Learn about treatment.
Iron deficiency in children: Prevention tips for parents
Learn how much of this key mineral your child needs and what the health risks of not getting enough are.
Is a home sperm test useful?
Using a home sperm test to check your fertility may not provide a clear answer.
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