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Macroamylasemia [Disease]

Macroglobulinemia of Waldenstrom [Disease]

Macular degeneration [Disease]

Major depression [Disease]

Major depression with psychotic features [Disease]

Malabsorption [Disease]

Malaria [Disease]

Male pattern baldness [Disease]

Malignant hypertension [Disease]

Malignant hyperthermia [Disease]

Malignant otitis externa [Disease]

Malignant teratoma [Disease]

Mallory-Weiss tear [Disease]

Malnutrition [Disease]

Malocclusion of teeth [Disease]

Maple syrup urine disease [Disease]

Marfan syndrome [Disease]

Marijuana intoxication [Disease]

Mastoiditis [Disease]

Maternal deprivation syndrome [Disease]

Mathematics disorder [Disease]

Mc

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McArdle syndrome [Disease]

McCune-Albright syndrome [Disease]

Me

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Measles [Disease]

Meatal stenosis [Disease]

Meckel's diverticulum [Disease]

Meconium aspiration syndrome [Disease]

Mediastinal tumor [Disease]

Mediastinitis [Disease]

Medullary carcinoma of thyroid [Disease]

Medullary cystic kidney disease [Disease]

Megaloblastic anemia [Disease]

Meibomianitis [Disease]

Melanoma [Disease]

Melanoma of the eye [Disease]

Melasma [Disease]

Membranoproliferative GN [Disease]

Membranous nephropathy [Disease]

Meniere's disease [Disease]

Meningitis [Disease]

Meningitis - cryptococcal [Disease]

Meningitis - gram-negative [Disease]

Meningitis - H. influenzae [Disease]

Meningitis - meningococcal [Disease]

Meningitis - pneumococcal [Disease]

Meningitis - staphylococcal [Disease]

Meningitis - tuberculous [Disease]

Meningococcemia [Disease]

Menkes syndrome [Disease]

Menopause [Disease]

Mental retardation [Disease]

Mesenteric artery ischemia [Disease]

Mesenteric venous thrombosis [Disease]

Mesothelioma (benign-fibrous) [Disease]

Mesothelioma (malignant) [Disease]

Metabolic acidosis [Disease]

Metabolic neuropathies [Disease]

Metabolic syndrome [Disease]

Metachromatic leukodystrophy [Disease]

Metastatic brain tumor [Disease]

Metastatic cancer to the lung [Disease]

Metastatic pleural tumor [Disease]

Metatarsus adductus [Disease]

Methemoglobinemia [Disease]

Methemoglobinemia - acquired [Disease]

Methylmalonic acidemia [Disease]

Methylmercury poisoning [Disease]

Mi

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Migraine [Disease]

Milia [Disease]

Milk-alkali syndrome [Disease]

Mineral metabolism disorders [Disease]

Minimal change disease [Disease]

Miscarriage [Disease]

Miscarriage - threatened [Disease]

Mitral regurgitation - acute [Disease]

Mitral regurgitation - chronic [Disease]

Mitral stenosis [Disease]

Mitral valve prolapse [Disease]

Mittelschmerz [Disease]

Mixed receptive-expressive language disorder [Disease]

Mixed tension migraine [Disease]

Mo

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Molluscum contagiosum [Disease]

Mongolian blue spots [Disease]

Mononeuritis multiplex [Disease]

Mononeuropathy [Disease]

Mononucleosis [Disease]

Morquio syndrome [Disease]

Morton's neuroma [Disease]

Mosaicism [Disease]

Mouth ulcers [Disease]

MR

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MRSA [Disease]

Mu

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Mucormycosis [Disease]

Mucous cyst [Disease]

Multi-infarct dementia [Disease]

Multifocal atrial tachycardia [Disease]

Multiple endocrine neoplasia (MEN) I [Disease]

Multiple endocrine neoplasia (MEN) II [Disease]

Multiple lentigines syndrome [Disease]

Multiple myeloma [Disease]

Multiple sclerosis [Disease]

Multiple system atrophy [Disease]

Mumps [Disease]

Munchausen syndrome by proxy [Disease]

Muscular dystrophy [Disease]

My

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Myasthenia gravis [Disease]

Mycoplasma pneumonia [Disease]

Myelomeningocele [Disease]

Myocardial contusion [Disease]

Myocarditis [Disease]

Myocarditis - pediatric [Disease]

Myopathic changes [Disease]

Myositis [Disease]

Myotonia congenita [Disease]