Skin care
Learning Center
Menstrual cramps
Menstrual cramps — pain in the lower abdomen just before or during menstrual periods — can range from mild to severe. Learn about treatment options.
Microcephaly
Learn more about microcephaly, when an infant's head is smaller than expected. The condition affects child development.
Miscarriage
Learn what might cause the loss of a pregnancy, the symptoms and how to cope.
Mittelschmerz
Some women experience pain on one side of the lower abdomen midway through their menstrual cycles. This cyclic pelvic pain is known as mittelschmerz.
Morning sickness
Learn more about nausea and vomiting during pregnancy. Learn about remedies that may help ease that queasy feeling.
Narcolepsy
Learn more about this sleep disorder that causes periods of involuntary sleep, sleep paralysis and early rapid eye movement (REM) sleep.
Nasopharyngeal carcinoma
Nasopharyngeal carcinoma is cancer that occurs in the nasopharynx, which is located behind your nose and above the back of your throat.
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.
Osteoporosis
Fractures associated with this bone-weakening condition can be life-altering. Good nutrition, regular exercise and medications can help.
Ovarian cancer
Learn more about cancer of the ovaries, including symptoms and treatments, such as surgery, chemotherapy and targeted therapy.
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