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Common Symptoms:
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Diseases and Medical Conditions M-O provides down-to-earth, comprehensive definitions of hundreds of ailments and illnesses beginning with the letters M-O. Each listing identifies causes, incidence and risk factors, notes symptoms, outlines tests and discusses treatments and support groups where applicable.
Featured Article: Obsessive-compulsive Disorder
Obsessive compulsive disorder (OCD) is an anxiety disorder where a person performs tasks to relieve obsessions. Learn about obsessive compulsive disorder symptoms, tests and treatments. See more »
Myocardial Contusion
Myocardial contusions are heart muscle bruises from blunt trauma to the chest causing pain. Learn about myocardial contusion causes, symptoms, tests, treatment and prevention.
See more »Myocarditis
Myocarditis is an inflammation of the hearth muscle. Learn about myocarditis causes, symptoms, treatment and prevention.
See more »Myopathic Changes
Myopathic Changes information from HowStuffWorks. Learn about causes, symptoms and treatments of Myopathic Changes.
See more »Myositis
Myositis or myitis is the swelling of skeletal muscles from injury, infection or autoimmune disease. Learn about myositis causes, symptoms, tests, treatment and prevention.
See more »Myotonia Congenita
Myotonia congenita is a disorder characterized by slow relaxation of voluntary muscles. Learn about myotonia congenita causes, symptoms, treatment and prevention.
See more »Nabothian Cyst
Nabothian cyst is a mucus-filled cyst on the surface of the uterine cervix. Learn about nabothian cyst causes, symptoms, treatment and prevention.
See more »Narcissistic Personality Disorder
Narcissistic personality disorder is a condition of egotism or obsessive behavior with one’s self. Learn about Narcissistic personality disorder symptoms, tests and treatments.
See more »Narcolepsy
Narcolepsy is a sleep disorder defined by involuntary drowsiness and frequent daytime sleeping. Learn about narcolepsy symptoms, tests and treatments.
See more »Nasal Polyps
Nasal polyps are small, sac-like growths of inflamed nasal mucosa. Learn about nasal polyp causes, symptoms, treatment and prevention.
See more »Natural Short Sleeper
Natural short sleeper is anyone who sleeps less in a 24-hour period than expected. Learn about natural short sleeper causes, symptoms, treatment and prevention.
See more »Nearsightedness
Nearsightedness or myopia is when the eye focuses incorrectly making distant objects appear blurry. Learn about nearsightedness symptoms, tests and treatments.
See more »Necrotizing Enterocolitis
Necrotizing enterocolitis (NEC) is an acquired disease causing intestinal tissue death. Learn about NEC causes, symptoms, treatment and prevention.
See more »Necrotizing Granuloma
Necrotizing granuloma is a type of tumor that causes tissue death. Learn about necrotizing granuloma causes, symptoms, treatment and prevention.
See more »Necrotizing Soft Tissue Infection
Necrotizing soft tissue infection, a severe skin infection, causes gangrene, systemic disease and death. Learn about necrotizing soft tissue infection causes, symptoms, treatment and prevention.
See more »Necrotizing Vasculitis
Necrotizing vasculitis, an inflammatory blood vessel condition, causes tissue death. Learn about necrotizing vasculitis causes, symptoms, treatment and prevention.
See more »Neonatal Conjunctivitis
Neonatal conjunctivitis is a red eye in a newborn from infection, irritation or blocked tear duct. Learn about neonatal conjunctivitis causes, symptoms, treatment and prevention.
See more »Nephrocalcinosis
Nephrocalcinosis are calcium oxalate deposits in the renal tubules or interstitium. Learn about nephrocalcinosis causes, symptoms, treatment and prevention.
See more »Nephrotic Syndrome
Nephrotic syndrome is a group of symptoms most commonly from kidney disorders. Learn about nephrotic syndrome causes, symptoms, treatment and prevention.
See more »Neuralgia
Nerve pain or neuralgia is pain that follows specific nerve paths and can cause motor nerve damage. Learn about nerve pain symptoms, tests and treatments.
See more »Neuroblastoma
Neuroblastoma is a malignant tumor that develops from nerve tissue. Learn about neuroblastoma causes, symptoms, treatment and prevention.
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