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MI (heart attack, myocardial infarction)
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MR (mitral regurgitation, chronic)
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MSG allergy (Chinese restaurant syndrome, CRS, MSG symptom complex)
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MSG symptom complex (Chinese restaurant syndrome, CRS, MSG allergy)
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MSP (Munchausen syndrome, factitious disorder, Munchausen syndrome by proxy)
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MVP (mitral valve prolapse)
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Mediterranean anemia (thalassemia, thalassemia major, thalassemia minor, Cooley's anemia)
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Meniere's disease (Meniérè's syndrome)
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Meniérè's syndrome (Meniere's disease)
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Munchausen syndrome (factitious disorder, Munchausen syndrome by proxy, MSP)
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Munchausen syndrome by proxy (Munchausen syndrome, factitious disorder, MSP)
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macular degeneration (central retinal degeneration)
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mad cow disease (bovine spongiform encephalopathy, new variant Creutzfeldt-Jakob disease, new variant CJD)
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mal perforant ulcer (diabetic foot ulcer, diabetic foot wound, diabetic neuropathic ulceration, diabetic dermal ulcer, diabetic dermal wound)
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malaria (diabetic foot ulcer, diabetic foot wound, diabetic neuropathic ulceration, diabetic dermal ulcer, diabetic dermal wound)
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male infertility (infertility due to male factors)
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male pseudohermaphroditism (testicular feminization, complete androgen insensitivity syndrome)
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malignancy (cancer, carcinoma, tumor)
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malignant hypertension (malignant hypertensive arteriolar nephrosclerosis)
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malignant hypertensive arteriolar nephrosclerosis (malignant hypertension)
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malignant mesothelioma (malignant hypertension)
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malignant neutropenia (agranulocytosis)
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malignant otitis externa (necrotizing external otitis, necrotizing external otitis)
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malingering (necrotizing external otitis, necrotizing external otitis)
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mallet toe (hammertoe, claw toe)
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manic depression (bipolar disorder, manic depressive disorder)
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manic depressive disorder (bipolar disorder, manic depression)
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marfan syndrome (neonatal marfan syndrome, congenital marfan syndrome, infantile marfan syndrome)
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marijuana abuse (cannabis abuse)
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mask of pregnancy (melasma, chloasma)
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mastitis (breast infection)
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mastoiditis (breast infection)
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measles (rubeola)
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meatal stenosis (urethral meatal stenosis)
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meconium aspiration syndrome (urethral meatal stenosis)
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median nerve compression or entrapment (carpal tunnel syndrome)
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medication allergy (allergic reaction to a medication, drug allergy)
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medication-induced hepatitis (drug-induced hepatitis)
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medication-induced hypertension (drug-induced hypertension, drug-induced high blood pressure)
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medication-induced hypoglycemia (drug-induced hypoglycemia, hypoglycemia from medications)
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medication-induced lupus (drug-induced lupus erythematosus, drug-induced lupus, DIL)
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medication-induced pulmonary disease (drug-induced pulmonary disease, drug-induced lung disease)
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medication-induced tremor (drug-induced tremor)
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medullary cystic disease (medullary cystic renal disease, nephronophthisis complex)
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medullary cystic renal disease (medullary cystic disease, nephronophthisis complex)
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melanoma (skin cancer (melanoma))
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melasma (chloasma, mask of pregnancy)
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menarche (menstruation, menses, period)
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meningitis in infants and children (menstruation, menses, period)
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meningococcal infections (infections)
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menopause (change of life, climacteric)
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menses (menstruation, period, menarche)
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menstruation (menses, period, menarche)
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mental abuse (emotional abuse, psychological abuse, verbal abuse)
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mental retardation (developmentally delayed, mentally disabled)
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mentally disabled (mental retardation, developmentally delayed)
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metabolic acidosis (acidosis, metabolic)
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metabolic disorders (inborn errors of metabolism, enzymatic disorders)
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metastasis (inborn errors of metabolism, enzymatic disorders)
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metatarsalgia (painful foot joints)
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methamphetamine addiction (amphetamine addiction)
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metrorrhagia (vaginal bleeding between periods, intermenstrual bleeding, spotting)
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middle ear infection (acute otitis media)
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migraine (migraine without aura, vascular headaches)
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migraine with aura (classical migraine, classic migraine)
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migraine without aura (migraine, vascular headaches)
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ministroke (transient ischemic attack, TIA, reversible ischemic neurologic disease (RIND))
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miscarriage (spontaneous abortion, complete abortion)
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missed menstrual periods (amenorrhea, absence of menstrual periods)
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mitral regurgitation, acute (acute mitral insufficiency, acute mitral incompetence)
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mitral regurgitation, chronic (MR)
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mitral stenosis (none)
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mitral valve prolapse (MVP)
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mixed tension headache (mixed tension migraine, mixed-pattern headache)
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mixed tension migraine (mixed tension headache, mixed-pattern headache)
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mixed-pattern headache (mixed tension headache, mixed tension migraine)
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molar pregnancy (hydatiform mole, trophoblastic disease, gestational trophoblastic neoplasia)
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molluscum contagiosum (hydatiform mole, trophoblastic disease, gestational trophoblastic neoplasia)
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mononucleosis (Epstein-Barr viral infection)
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monosomy X (Turner syndrome, Ullrich-Turner syndrome, 45,X gonadal dysgenesis)
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morbilli (measles, red measles, rubeola)
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morning sickness (measles, red measles, rubeola)
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motion sickness (measles, red measles, rubeola)
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motor tics (transient tic disorder, motor twitches, vocal tics)
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motor twitches (transient tic disorder, motor tics, vocal tics)
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mouth and throat cancer (oral cancer, squamous cell cancer of the oral cavity)
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mouth ulcer (canker sore, oral ulcer, denture sore, ulcerative stomatitis)
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mucocutaneous lymph node syndrome (Kawasaki disease, Kawasaki's syndrome)
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mucopolysaccharidosis II (Hunter syndrome, sulfo-iduronate sulfatase deficiency)
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multiple myeloma (Hunter syndrome, sulfo-iduronate sulfatase deficiency)
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multiple personality disorder (dissociative identity disorder, dual personality disorder)
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multiple sclerosis (dissociative identity disorder, dual personality disorder)
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multiple tic syndrome (Tourette syndrome, Gilles de la Tourette syndrome)
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mumps (Tourette syndrome, Gilles de la Tourette syndrome)
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muscular dystrophy (Tourette syndrome, Gilles de la Tourette syndrome)
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myalgic encephalomyelitis (chronic fatigue syndrome, CFS, chronic fatigue and immune dysfunction syndrome)
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myasthenia gravis (chronic fatigue syndrome, CFS, chronic fatigue and immune dysfunction syndrome)
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mycoplasma infections (infections, primary atypical pneumonia)
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mycotic nails (fungal nail infection, onychomycosis)
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myocardial contusion (traumatic heart disease)
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myocardial infarction (heart attack, MI)
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myocarditis (heart attack, MI)
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myoma (uterine fibroids, leiomyoma, fibromyoma)
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myopia (nearsightedness)
