Fitness basics
Learning Center
Kidney stones
Learn about the symptoms, risks, causes and treatment of this often intensely painful condition.
Soft tissue sarcoma
This rare type of cancer can begin in the muscles, fat, blood vessels, nerves, tendons and the lining of joints. Treatment usually includes surgery.
Tonic-clonic (grand mal) seizure
Learn about this type of seizure that can cause convulsions. Also know how to help if you see someone having one.
Priapism
Understand the symptoms, possible causes and treatment of prolonged erection of the penis, including when to seek emergency care.
Obstructive sleep apnea
Learn the signs that point to this common and potentially serious sleep disorder. And find out the treatments that can help you sleep better.
Male hypogonadism
This condition affects the ability of men's bodies to produce enough testosterone or enough sperm or both.
Retrograde ejaculation
Learn about the symptoms and treatment options for this condition that can cause male infertility.
Blepharitis
This often chronic eyelid condition can be difficult to treat. It might be uncomfortable, but it doesn't usually damage eyesight and isn't contagious.
Bone metastasis
Learn about the symptoms and causes of cancer that spreads to the bones. Find out about treatments, including medications, radiation and surgery.
Diabetic retinopathy
Good diabetes control and regular exams can help prevent this diabetes complication that affects the eyes. Find out how.
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