Fitness basics
Learning Center
Cluster headache
These painful headaches cause severe pain on one side of the head and tend to occur in bouts called cluster periods.
Vaginal atrophy
Read about this condition that causes vaginal and urinary symptoms, often after menopause. It's also called genitourinary syndrome of menopause.
Female infertility
Learn about infertility in women, including possible causes, what tests might be needed and fertility treatments available to help with getting pregnant.
Interstitial cystitis
Bladder pain and urinary frequency flare with certain triggers if you have this condition. Learn about treatments and self-care.
Secondary infertility: Why does it happen?
Second pregnancies don't always come easily. Learn about possible causes for secondary infertility and when to seek professional help.
Sinus infection and toothache: Any connection?
Sometimes the cause of a toothache isn't a tooth problem, but a sinus problem.
Semen allergy: A cause of infertility?
Semen allergy, also called seminal plasma hypersensitivity, is a rare condition that can be easily misdiagnosed. Learn about symptoms and possible treatments.
Ovarian hyperstimulation syndrome
Learn about this possible complication of fertility treatments and how to recognize when you need to contact your care team.
Vaginitis
Inflammation of the vagina can result in discharge, itching and pain. Recognize signs and symptoms and learn when to seek treatment.
Male hypogonadism
This condition affects the ability of men's bodies to produce enough testosterone or enough sperm or both.
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