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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: Malignant Hyperthermia
Malignant hyperthermia is a disease that causes rapid fever and muscle contractions from anesthetic exposure. Learn about malignant hyperthermia causes, symptoms, treatment and prevention. See more »
Menkes Syndrome
Menkes syndrome causes complications in multiple parts of the body from copper deficiency. Learn about Menkes syndrome causes, symptoms, treatment and prevention.
See more »Menopause
Menopause is the period at which women stop producing eggs, menstruation slows and hormone levels fall. Learn about menopause causes, symptoms, tests, treatment and prevention.
See more »Mental Retardation
Mental retardation is a condition of below average intelligence and acquisition of life skills. Learn about mental retardation types, causes, symptoms, tests, treatment and prevention.
See more »Mesenteric Artery Ischemia
Mesenteric artery ischemia is narrowing or blockage of one of three mesenteric arteries. Learn about mesenteric artery ischemia causes, symptoms, treatment and prevention.
See more »Mesenteric Venous Thrombosis
Mesenteric venous thrombosis occurs when a mesenteric vein is blocked by a blood clot. Learn about mesenteric venous thrombosis causes, symptoms, treatment and prevention.
See more »Mesothelioma (benign-fibrous)
Mesothelioma (benign-fibrous) is a noncancerous tumor of the pleura. Learn about benign-fibrous mesothelioma causes, symptoms, treatment and prevention.
See more »Mesothelioma (malignant)
Mesothelioma (malignant) is a malignant tumor of the pleura from asbestos exposure. Learn about malignant mesothelioma causes, symptoms, treatment and prevention.
See more »Metabolic Acidosis
Metabolic acidosis is a disturbance in bodily acid/base levels resulting in high blood acidity and complications. Learn about metabolic acidosis causes, symptoms, tests, treatment and prevention.
See more »Metabolic Neuropathies
Metabolic neuropathies are diseases of the nerves caused by chemical process disruptions in the body. Learn about metabolic neuropathies causes, symptoms, tests, treatment and prevention.
See more »Metachromatic Leukodystrophy
Metachromatic leukodystrophy (MLD) is a progressive nerve, organ and muscle disorder. Learn about MLD causes, symptoms, treatment and prevention.
See more »Metastatic Brain Tumor
Metastatic brain tumor is a cancerous cell mass in the brain that spread from another body part. Learn about metastatic brain tumor causes, symptoms, treatment and prevention.
See more »Metastatic Cancer To The Lung
Metastatic cancer to the lung is a lung cancer that spread from another body part. Learn about metastatic cancer to the lung causes, symptoms, treatment and prevention.
See more »Metastatic Pleural Tumor
Metastatic pleural tumor is a cancerous tumor in the pleural space that spread from another organ. Learn about metastatic pleural tumor causes, symptoms, treatment and prevention.
See more »Metatarsus Adductus
Metatarsus adductus is a foot deformity occurring during fetus development bending the foot inward at the instep. Learn about metatarsus adductus causes, symptoms, tests, treatment and prevention.
See more »Methanol Intoxication
Methanol intoxication is poisoning from ingesting methanol or wood alcohol. Learn about methanol intoxication causes, symptoms, treatment and prevention.
See more »Methemoglobinemia
Methemoglobinemia is a defect in hemoglobin molecules reducing oxygen carrying efficiency. Learn about methemoglobinemia causes, symptoms, treatment and prevention.
See more »Methemoglobinemia - Acquired
Methemoglobinemia – acquired is a defect in hemoglobin acquired from chemical exposure. Learn about acquired methemoglobinemia causes, symptoms, treatment and prevention.
See more »Methylmalonic Acidemia
Methylmalonic acidemia is an enzyme metabolism defect causing methylmalonic acid accumulation. Learn about methylmalonic acidemia causes, symptoms, treatment and prevention.
See more »Methylmercury Poisoning
Methylmercury poisoning is neurological damage from exposure to methylmercury. Learn about methylmercury poisoning causes, symptoms, treatment and prevention.
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