Stress basics
Learning Center
Delayed ejaculation
Learn what can cause delayed or absent ejaculation and how it can be treated.
Varicocele
Find out how this condition involving the enlargement of veins in the scrotum can affect sperm quality and production.
Enlarged breasts in men (gynecomastia)
Learn how an imbalance of the hormones estrogen and testosterone can cause breast tissue swelling in boys or men.
Premature ejaculation
Understand what may cause ejaculation to happen earlier than wanted during sex. Also learn how to treat and prevent it.
Kawasaki disease
Learn more about this condition that primarily affects young children and causes inflammation in the walls of the arteries throughout the body.
Scrotal masses
Lumps in the scrotum have various causes. Even painless lumps should be checked promptly by a health care professional.
Retractile testicle
Find out about this condition that allows the testicle to move between the scrotum and groin.
Prostatitis
Learn about tests and treatments for disorders of the prostate gland that cause pain, difficult or painful urination, and other symptoms.
Post-vasectomy pain syndrome
Learn about post-vasectomy pain syndrome (PVPS) — How it happens after a vasectomy, tests to diagnose it and treatment options.
Erectile dysfunction
Understand what can cause the inability to get and keep an erection firm enough for sex and the possible treatment options.
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