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Diseases & Conditions

Myasthenia gravis

A breakdown in the communication between nerves and muscles causes weakness and fatigue of muscles…

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Myelin oligodendrocyte glycoprotein antibody-associated disease (MOGAD)

Learn about the symptoms, diagnosis and treatments for this autoimmune disease that attacks nerve fibers…

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Myelodysplastic syndromes

Learn how medications and bone marrow transplants are used to control complications caused by these…

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Myelofibrosis

Find out more about this bone marrow cancer. Learn about symptoms, diagnosis and treatments for…

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Myocardial ischemia

Myocardial ischemia reduces blood flow to the heart and may cause chest pain — but…

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Myocarditis

Learn about the diagnosis and treatment of this inflammation of the heart muscle that can…

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Myoclonus

These uncontrollable jerking motions, which include normal hiccups and "sleep starts," can be disabling when…

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Myofascial pain syndrome

In this condition, pressure on certain points in the muscles, called trigger points, can cause…

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Myofascial release therapy: Can it relieve back pain?

Myofascial release, a form of manual therapy, may help reduce back pain.

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Myomectomy

This surgery to treat uterine fibroids aims to keep the ability to have children. There…

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Myxofibrosarcoma

Learn about this connective tissue cancer that often starts in the arms and legs. Myxofibrosarcoma…

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Nail fungus

Learn about symptoms, treatment and prevention of this common infection among older adults that causes…

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Nail ridges: Cause for concern?

Vertical nail ridges are common and often become more prominent with age.

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Napping: Do's and don'ts for healthy adults

Taking a nap can be good your health. Find out how to make the most…

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Narcissistic personality disorder

This mental disorder includes an unreasonably high sense of importance, a need for excessive admiration,…

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Narcolepsie

Learn more about this sleep condition that causes periods of involuntary sleep, sleep paralysis and…

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Narrow stools: Should I be concerned?

Narrow stools may be a sign that the colon is narrowing or has a blockage.

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Nasal and paranasal tumors

Learn about these cancerous and noncancerous growths that form in and around the nose. Treatments…

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Nasal congestion

Learn more about what can cause a stuffy nose and how to relieve it.

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Nasal polyps

These painless, noncancerous growths can lead to a lost sense of smell or infection. Medicine…

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Nasopharyngeal carcinoma

Nasopharyngeal carcinoma is cancer that happens in the nasopharynx, which sits behind the nose and…

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Natural breast enhancement: Do supplements work?

Breast enhancement supplements haven't been proved effective, and they could cause side effects.

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Natural remedies for depression: Are they effective?

For some people, some herbal and dietary supplements seem to help with depression. More studies…

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Natural vs. safe: Why the two aren't the same

"Natural" on the label doesn't mean safe in your body. Learn the truth behind the…

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Nausea and vomiting

Motion sickness and drinking alcohol are among the many common causes of nausea and vomiting.…

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Nausea during pregnancy: A good thing?

Morning sickness is common during pregnancy. Understand what nausea and vomiting might mean while you're…

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Nearsightedness

Tired of squinting at objects in the distance? There are effective treatment options for this…

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Neck lift

Find out how this cosmetic procedure removes excess skin and fat around the jaw line…

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La douleur du cou

This common ailment can be the result of poor posture or osteoarthritis. Rarely, it can…

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Neck pain: Symptom

Stress, strain and sitting for long hours at a computer are some of the many…

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