Healthy retirement
Learning Center
Rett syndrome
This rare genetic disorder affects the way the brain develops, causing a progressive inability to use muscles for eye and body movements and language.
Testicular torsion
Sudden, severe pain in the scrotum could be testicular torsion. Learn about symptoms and treatment for this health emergency.
Toe walking in children
Walking on toes or the balls of the feet is fairly common in children who are learning to walk. Most children outgrow it.
Priapism
Understand the symptoms, possible causes and treatment of prolonged erection of the penis, including when to seek emergency care.
Retrograde ejaculation
Learn about the symptoms and treatment options for this condition that can cause male infertility.
Male hypogonadism
This condition affects the ability of men's bodies to produce enough testosterone or enough sperm or both.
Spermatocele
Learn more about this noncancerous testicular disorder that may require surgery if it's causing discomfort. But, the condition often needs no treatment.
Hypospadias
Hypospadias is a birth defect in which the opening of the urethra is located on the underside of the penis instead of the tip. Learn about treatment.
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.
Peyronie disease
Understand what causes bent and painful erections and learn what treatments are available.
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