Fitness basics
Learning Center
Ductal carcinoma in situ (DCIS)
Noninvasive breast cancer often has no symptoms. Find out about the causes, diagnosis and treatment of this form of breast cancer.
Ectopic pregnancy
Ectopic pregnancy occurs outside the uterus, threatening the mother's life. It can't continue normally. But swift treatment can prevent deadly blood loss.
Encephalitis
Learn about this potentially fatal condition associated with inflammation of the brain and what you can do to prevent it.
End-stage renal disease
When kidneys no longer function well enough to meet a body's needs, treatment involves kidney dialysis or kidney transplant.
Enlarged breasts in men (gynecomastia)
Learn how an imbalance of the hormones estrogen and testosterone can cause breast tissue swelling in boys or men.
Epididymitis
This inflammation of the coiled tube at the back of the testicle that stores and carries sperm is usually caused by a bacterial infection.
Erectile dysfunction
Understand what can cause the inability to get and keep an erection firm enough for sex and the possible treatment options.
Essential tremor
Learn about this condition that causes uncontrollable shaking and find out how it differs from Parkinson's disease.
Fecal incontinence
Learn about this common issue that causes some people to avoid social situations. Treatments are available.
Fetal alcohol syndrome
This condition results from alcohol exposure before birth. The exposure causes lifelong problems with behavior, learning, thinking and physical development.
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