Fitness basics
Learning Center
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.
Hydrocele
Find out more about the symptoms, causes and treatments for this swelling in the scrotum.
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.
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.
Scorpion sting
Scorpion stings are painful but rarely life-threatening. Young children and older adults are most at risk of serious complications.
Erectile dysfunction
Understand what can cause the inability to get and keep an erection firm enough for sex and the possible treatment options.
Pink eye (conjunctivitis)
This highly contagious eye condition can be itchy and uncomfortable. But much like the common cold, it rarely requires medicine or staying home.
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