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Mammary duct ectasia
Mammary duct ectasia is a noncancerous breast condition that affects the milk ducts. Learn the signs and symptoms and when treatment might be needed.
Microcephaly
Learn more about microcephaly, when an infant's head is smaller than expected. The condition affects child development.
Mild cognitive impairment (MCI)
Learn more about this stage between the typical cognitive decline of aging and the more serious decline of dementia.
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.
Orchitis
This inflammation of one or both testicles can cause pain and infertility. It's usually caused by a bacterial infection or the mumps virus.
Paraneoplastic syndromes of the nervous system
This group of conditions affects people who have cancer and occurs when parts of the immune system attack parts of the nervous system.
Perimenopause
Discover effective treatments and learn self-care strategies for hot flashes, night sweats, vaginal dryness and other perimenopause symptoms.
Peritonitis
Learn about the causes, symptoms and treatment of peritonitis.
Peyronie disease
Understand what causes bent and painful erections and learn what treatments are available.
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