List of diseases (M)

A list of diseases.

Ma • Mc • Me • Mi • Ml–Mn • Mo • Mp–Mt • Mu • My

Ma
Mac • Mad–Mak • Mal • Man • Mar • Mas–May

Mac

 * Mac Dermot Patton Williams syndrome
 * Mac Dermot Winter syndrome

Maci–Macr

 * Macias–Flores–Garcia–Cruz–Rivera syndrome
 * Mackay–Shek–Carr syndrome
 * Macleod–Fraser syndrome
 * Macrocephaly cutis marmorata telangiectatica
 * Macrocephaly dominant type
 * Macrocephaly mental retardation facial dysmorphism
 * Macrocephaly mesodermal hamartoma spectrum
 * Macrocephaly mesomelic arms talipes
 * Macrocephaly pigmentation large hands feet
 * Macrocephaly short stature paraplegia
 * Macrodactyly of the foot
 * Macrodactyly of the hand
 * Macroepiphyseal dysplasia Mcalister Coe type
 * Macroglobulinemia
 * Macroglossia dominant
 * Macroglossia exomphalos gigantism
 * Macrogyria pseudobulbar palsy
 * Macrophagic myofasciitis
 * Macrosomia developmental delay dysmorphism
 * Macrosomia microphthalmia cleft palate
 * Macrothrombocytopenia progressive deafness
 * Macrothrombocytopenia with leukocyte inclusions

Macu

 * Macular corneal dystrophy
 * Macular degeneration
 * Macular degeneration juvenile
 * Macular degeneration, age-related
 * Macular degeneration, polymorphic
 * Macular dystrophy, vitelliform
 * Macules hereditary congenital hypopigmented and hyperpigmented

Mad–Mak

 * Mad cow disease
 * Madelung's disease
 * Madokoro–Ohdo–Sonoda syndrome
 * Maffucci syndrome
 * Maghazaji syndrome
 * Magnesium defect in renal tubular transport of
 * Magnesium wasting renal
 * Major depressive disorder

Mal

 * Mal de debarquement

Mala–Mall

 * Malakoplakia
 * Malaria
 * Male pseudohermaphroditism due to 17-beta-hydroxysteroid dehydrogenase deficiency
 * Male pseudohermaphroditism due to 5-alpha-reductase 2 deficiency
 * Male pseudohermaphroditism due to defective LH molecule
 * Malformations in neuronal migration
 * Malignant astrocytoma
 * Malignant fibrous histiocytoma
 * Malignant germ cell tumor
 * Malignant hyperthermia arthrogryposis torticollis
 * Malignant hyperthermia
 * Malignant hyperthermia susceptibility type 1
 * Malignant hyperthermia susceptibility type 2
 * Malignant hyperthermia susceptibility type 3
 * Malignant hyperthermia susceptibility type 4
 * Malignant hyperthermia susceptibility type 5
 * Malignant hyperthermia susceptibility type 6


 * Malignant mesenchymal tumor
 * Malignant mixed Müllerian tumor
 * Malignant paroxysmal ventricular tachycardia
 * Mallory–Weiss syndrome

Malo–Malp

 * Malonic aciduria
 * Malonyl-CoA decarboxylase deficiency
 * Malouf syndrome
 * Malpuech facial clefting syndrome

Man

 * Mandibuloacral dysplasia
 * Mandibulofacial dysostosis deafness postaxial polydactyly
 * Manic Depression, Bipolar
 * Manic-depressive psychosis, genetic types
 * Mannosidosis
 * Manouvrier syndrome
 * Mansonelliasis
 * Mantle cell lymphoma

Mara–Marg

 * Marashi–Gorlin syndrome
 * Marburg fever
 * Marchiafava–Bignami disease
 * Marchiafava–Micheli disease
 * Marcus Gunn phenomenon
 * Marden–Walker-like syndrome
 * Marden–Walker syndrome
 * Marek disease
 * Marfan syndrome
 * Marfan Syndrome type II
 * Marfan Syndrome type III
 * Marfan Syndrome type IV
 * Marfan Syndrome type V
 * Marfan-like syndrome, Boileau type
 * Marfan-like syndrome
 * Marfanoid craniosynostosis syndrome
 * Marfanoid hypermobility
 * Marfanoid mental retardation syndrome autosomal
 * Marginal glioneuronal heterotopia

Mari–Mart

 * Marie type ataxia
 * Marie–Unna congenital hypotrichosis
 * Marinesco–Sjögren like syndrome
 * Marinesco–Sjögren syndrome
 * Marion–Mayers syndrome
 * Markel–Vikkula–Mulliken syndrome
 * Marles–Greenberg–Persaud syndrome
 * Maroteaux–Cohen–Solal–Bonaventure syndrome
 * Maroteaux–Fonfria syndrome
 * Maroteaux–Le Merrer–Bensahel syndrome
 * Maroteaux–Stanescu–Cousin syndrome
 * Maroteaux–Verloes–Stanescu syndrome
 * Maroteaux–Lamy syndrome
 * Marphanoid syndrome type De Silva
 * Marsden–Nyhan–Sakati syndrome
 * Marsden syndrome
 * Marshall syndrome
 * Marshall–Smith syndrome
 * Martinez–Monasterio–Pinheiro syndrome
 * Martsolf–Reed–Hunter syndrome
 * Martsolf syndrome

Mas–May

 * MASA syndrome
 * Mass psychogenic illness
 * MASS syndrome
 * Massa–Casaer–Ceulemans syndrome
 * Mast cell disease
 * Mastocytosis, short stature, hearing loss
 * Mastocytosis
 * Mastoiditis
 * Mastroiacovo–De Rosa–Satta syndrome
 * Mastroiacovo–Gambi–Segni syndrome
 * MAT deficiency
 * Maternal hyperphenylalaninemia
 * Maternally inherited diabetes and deafness
 * Mathieu–De Broca–Bony syndrome
 * Matsoukas–Liarikos–Giannika syndrome
 * Matthew–Wood syndrome
 * Maturity onset diabetes of the young
 * Maumenee syndrome
 * Maxillary double lip
 * Maxillofacial dysostosis
 * Maxillonasal dysplasia, Binder type
 * Mayer–Rokitanski–Kuster syndrome
 * May–Hegglin anomaly

Mc

 * McAlister–Crane syndrome
 * McArdle disease
 * McCallum–Macadam–Johnston syndrome
 * McCune–Albright syndrome
 * McDonough syndrome
 * McDowall syndrome
 * McGillivray syndrome
 * McKusick–Kaufman syndrome
 * McKusick type metaphyseal chondrodysplasia
 * McLain–Debakian syndrome
 * McPherson–Clemens syndrome
 * McPherson–Robertson–Cammarano syndrome

Me
Mea–Med • Meg–Mei • Mel–Mem • Men • Mer–Mes • Met • Mev–Mey

Mea–Med

 * Meacham–Winn–Culler syndrome
 * Meadows syndrome
 * Measles
 * Meckel like syndrome
 * Meckel syndrome
 * Medeira Dennis Donnai syndrome
 * Median cleft lip corpus callosum lipoma skin polyps
 * Median nodule of the upper lip
 * Mediastinal endodermal sinus tumors
 * Mediastinal syndrome
 * Mediterranean fever
 * Medium-chain Acyl-CoA dehydrogenase deficiency
 * Medrano Roldan syndrome
 * Medullary cystic disease
 * Medullary thyroid carcinoma
 * Medulloblastoma

Meg–Mei

 * Megacystis microcolon intestinal hypoperistalsis syndrome
 * Megaduodenum
 * Mega-epiphyseal dwarfism
 * Megalencephalic leukodystrophy
 * Megalencephaly-cystic leukodystrophy
 * Megaloblastic anemia
 * Megalocornea mental retardation syndrome
 * Megalocytic interstitial nephritis
 * Mehes syndrome
 * Mehta–Lewis–Patton syndrome
 * Meier–Blumberg–Imahorn syndrome
 * Meier–Rotschild syndrome
 * Meige syndrome
 * Meigel disease
 * Meinecke–Pepper syndrome
 * Meinecke syndrome

Mel–Mem

 * Melanoma type 1
 * Melanoma type 2
 * Melanoma, familial
 * Melanoma, malignant
 * Melanoma-astrocytoma syndrome
 * Melanosis neurocutaneous
 * MELAS
 * Meleda disease
 * Melhem–Fahl syndrome
 * Melioidosis
 * Melkersson–Rosenthal syndrome
 * Melnick–Needles osteodysplasty
 * Melnick–Needles syndrome
 * Membranoproliferative glomerulonephritis (type II)

Mend–Meno

 * Mendelian susceptibility to atypical mycobacteria
 * Menetrier's disease
 * Mengel–Konigsmark syndrome
 * Ménière's disease
 * Meningeal angiomatosis cleft hypoplastic left heart
 * Meningioma 1
 * Meningioma
 * Meningitis, meningococcal
 * Meningitis
 * Meningocele
 * Meningococcemia
 * Meningoencephalocele
 * Meningoencephalocele-arthrogryposis-hypoplastic thumb
 * Meningomyelocele

Mental
Mental d – Mental m Mental r Mental retardation a – Mental retardation m Mental retardation n – Mental retardation s Mental retardation u – Mental retardation x
 * Mental deficiency-epilepsy-endocrine disorders
 * Mental mixed retardation deafnes clubbed digits
 * Mental retardation
 * Mental retardation anophthalmia craniosynostosis
 * Mental retardation arachnodactyly hypotonia telangiectasia
 * Mental retardation athetosis microphthalmia
 * Mental retardation blepharophimosis obesity web neck
 * Mental retardation Buenos Aires type
 * Mental retardation cataracts calcified pinnae myopathy
 * Mental retardation coloboma slimness
 * Mental retardation contractural arachnodactyly
 * Mental retardation dysmorphism hypogonadism diabetes
 * Mental retardation epilepsy bulbous nose
 * Mental retardation epilepsy
 * Mental retardation gynecomastia obesity X linked
 * Mental retardation hip luxation G6PD variant
 * Mental retardation hypocupremia hypobetalipoproteinemia
 * Mental retardation hypotonia skin hyperpigmentation
 * Mental retardation macrocephaly coarse facies hypotonia
 * Mental retardation microcephaly phalangeal facial
 * Mental retardation microcephaly unusual facies
 * Mental retardation Mietens–Weber type
 * Mental retardation multiple nevi
 * Mental retardation myopathy short stature endocrine defect
 * Mental retardation nasal hypoplasia obesity genital hypoplasia
 * Mental retardation nasal papillomata
 * Mental retardation osteosclerosis
 * Mental retardation progressive spasticity
 * Mental retardation psychosis macroorchidism
 * Mental retardation short broad thumbs
 * Mental retardation short stature absent phalanges
 * Mental retardation short stature Bombay phenotype
 * Mental retardation short stature cleft palate unusual facies
 * Mental retardation short stature deafness genital
 * Mental retardation short stature hand contractures genital anomalies
 * Mental retardation short stature heart and skeletal anomalies
 * Mental retardation short stature hypertelorism
 * Mental retardation short stature microcephaly eye
 * Mental retardation short stature ocular and articular anomalies
 * Mental retardation short stature scoliosis
 * Mental retardation short stature unusual facies
 * Mental retardation short stature wedge shaped epiphyses
 * Mental retardation skeletal dysplasia abducens palsy
 * Mental retardation Smith–Fineman–Myers type
 * Mental retardation spasticity ectrodactyly
 * Mental retardation unusual facies Ampola type
 * Mental retardation unusual facies Davis–Lafer type
 * Mental retardation unusual facies talipes hand anomalies
 * Mental retardation unusual facies
 * Mental retardation Wolff type
 * Mental retardation X linked Atkin type
 * Mental retardation X linked borderline Maoa metabolism anomaly
 * Mental retardation X linked Brunner type
 * Mental retardation X linked dysmorphism
 * Mental retardation X linked dystonia dysarthria
 * Mental retardation X linked severe Gustavson type
 * Mental retardation X linked short stature obesity
 * Mental retardation X linked Tranebjaerg type seizures psoriasis
 * Mental retardation, unexplained
 * Mental retardation, X linked, Marfanoid habitus
 * Mental retardation, X linked, nonspecific
 * Mental retardation, X-linked 14
 * Mental retardation-polydactyly-uncombable hair

Mer–Mes

 * Mercury poisoning (Mercurialism)
 * Meretoja syndrome
 * Merkle tumors
 * Merlob–Grunebaum–Reisner syndrome
 * Merlob syndrome
 * Mesangial sclerosis, diffuse
 * Mesenteric ischemia
 * Mesenteric panniculitis
 * Mesodermal defects lower type
 * Mesomelia synostoses
 * Mesomelia
 * Mesomelic dwarfism cleft palate camptodactyly
 * Mesomelic dwarfism Langer type
 * Mesomelic dwarfism Nievergelt type
 * Mesomelic dwarfism Reinhardt–Pfeiffer type
 * Mesomelic dysplasia skin dimples
 * Mesomelic dysplasia Thai type
 * Mesomelic syndrome Pfeiffer type
 * Mesothelioma

Meta

 * Metabolic acidosis
 * Metabolic disorder
 * Metabolic syndrome X
 * Metacarpals 4 and 5 fusion
 * Metachondromatosis
 * Metageria
 * Metaphyseal anadysplasia
 * Metaphyseal chondrodysplasia Schmid type
 * Metaphyseal chondrodysplasia Spahr type
 * Metaphyseal chondrodysplasia, others
 * Metaphyseal dysostosis mental retardation conductive deafness
 * Metaphyseal dysplasia maxillary hypoplasia brachydactyly
 * Metaphyseal dysplasia Pyle type
 * Metastatic insulinoma
 * Metatarsus adductus
 * Metatrophic dysplasia
 * Metatropic dwarfism

Meth

 * Methimazole antenatal infection
 * Methionine adenosyltransferase deficiency
 * Methyl mercury antenatal infection
 * Methylcobalamin deficiency cbl G type
 * Methylcobalamin deficiency, cbl E complementation type
 * Methylenetetrahydrofolate reductase deficiency
 * Methylmalonic acidemia with homocystinuria
 * Methylmalonic acidemia
 * Methylmalonic aciduria microcephaly cataract
 * Methylmalonicacidemia with homocystinuria, cbl D
 * Methylmalonicaciduria with homocystinuria, cbl F
 * Methylmalonicaciduria, vitamin B12 unresponsive, mut-0
 * Methylmalonyl-Coenzyme A mutase deficiency

Mev–Mey

 * Mevalonate kinase deficiency
 * Mevalonicaciduria
 * Meyenburg–Altherr–Uehlinger syndrome

Mi
Mib • Mic • Mid–Mir • Mis–Mix

Mib

 * Mibies syndrome

Mich–Mick

 * Michelin tire baby syndrome
 * Michels Caskey syndrome
 * Michels syndrome
 * Mickleson syndrome

Mircre

 * Micrencephaly corpus callosum agenesis
 * Micrencephaly olivopontocerebellar hypoplasia

Micro

 * Micro syndrome

Microb

 * Microbrachycephaly ptosis cleft lip

Microc
Microcephalic Microcephaly Microcephaly a – Microcephaly l Microcephaly m – Microcephaly w Microco
 * Microcephalic osteodysplastic primordial dwarfism
 * Microcephalic primordial dwarfism Toriello type
 * Microcephalic primordial dwarfism
 * Microcephaly
 * Microcephaly albinism digital anomalies syndrome
 * Microcephaly autosomal dominant
 * Microcephaly brachydactyly kyphoscoliosis
 * Microcephaly brain defect spasticity hypernatremia
 * Microcephaly cardiac defect lung malsegmentation
 * Microcephaly cardiomyopathy
 * Microcephaly cervical spine fusion anomalies
 * Microcephaly chorioretinopathy recessive form
 * Microcephaly cleft palate autosomal dominant
 * Microcephaly deafness syndrome
 * Microcephaly developmental delay pancytopenia
 * Microcephaly facial clefting preaxial polydactyly
 * Microcephaly glomerulonephritis Marfanoid habitus
 * Microcephaly hiatus hernia nephrotic syndrome
 * Microcephaly hypergonadotropic hypogonadism short stature
 * Microcephaly immunodeficiency lymphoreticuloma
 * Microcephaly intracranial calcification
 * Microcephaly lymphoedema chorioretinal dysplasia
 * Microcephaly lymphoedema syndrome
 * Microcephaly mental retardation retinopathy
 * Microcephaly mental retardation spasticity epilepsy
 * Microcephaly mesobrachyphalangy tracheoesophageal fistula syndrome
 * Microcephaly microcornea syndrome Seemanova type
 * Microcephaly micropenis convulsions
 * Microcephaly microphthalmos blindness
 * Microcephaly nonsyndromal
 * Microcephaly pontocerebellar hypoplasia dyskinesia
 * Microcephaly seizures mental retardation heart disorders
 * Microcephaly sparse hair mental retardation seizures
 * Microcephaly syndactyly brachymesophalangy
 * Microcephaly with chorioretinopathy, autosomal dominant form
 * Microcephaly with normal intelligence, immunodeficiency
 * Microcephaly with spastic q&shy;riplegia
 * Microcephaly, holoprosencephaly, and intrauterine growth retardation
 * Microcephaly, primary autosomal recessive
 * Microcoria, congenital
 * Microcornea correctopia macular hypoplasia
 * Microcornea glaucoma absent frontal sinuses

Microd – Microv

 * Microdontia hypodontia short stature
 * Microencephaly
 * Microgastria limb reduction defect
 * Microgastria short stature diabetes
 * Microinfarct
 * Micromelic dwarfism Fryns type
 * Micromelic dysplasia dislocation of radius
 * Microphtalmos bilateral colobomatous orbital cyst
 * Microphthalmia
 * Microphthalmia, Lentz type
 * Microphthalmia camptodactyly mental retardation
 * Microphthalmia cataract
 * Microphthalmia diaphragmatic hernia Fallot
 * Microphthalmia mental deficiency
 * Microphthalmia microtia fetal akinesia
 * Microphthalmia with limb anomalies
 * Microphthalmos, microcornea, and sclerocornea
 * Microscopic polyangiitis


 * Microsomia hemifacial radial defects
 * Microspherophakia metaphyseal dysplasia
 * Microsporidiosis
 * Microtia, meatal atresia and conductive deafness
 * Microvillus inclusion disease

Micu

 * Miculicz syndrome

Mid–Mir

 * MIDAS syndrome
 * Midline cleft of lower lip
 * Midline defects autosomal type
 * Midline defects recessive type
 * Midline developmental field defects
 * Midline field defects
 * Midline lethal granuloma
 * Mietens syndrome
 * Mievis–Verellen–Dumoulin syndrome
 * Migraine
 * Mikulicz syndrome
 * Mild cognitive impairment
 * Miller Fisher syndrome
 * Miller–Dieker syndrome
 * Milner–Khallouf–Gibson syndrome
 * MILS syndrome
 * Minamata disease
 * Minkowski–Chauffard syndrome
 * Minoxidil antenatal infection
 * Miosis, congenital
 * Mirhosseini–Holmes–Walton syndrome
 * Mirror hands feet nasal defects
 * Mirror polydactyly segmentation and limbs defects

Mis–Mix

 * Mitochondrial cytopathy (generic term)
 * Mitochondrial diseases of nuclear origin
 * Mitochondrial diseases, clinically undefinite
 * Mitochondrial disease
 * Mitochondrial encephalomyopathy aminoacidopathy
 * Mitochondrial genetic disorders
 * Mitochondrial myopathy lactic acidosis
 * Mitochondrial myopathy-encephalopathy-lactic acidosis
 * Mitochondrial PEPCK deficiency
 * Mitochondrial trifunctional protein deficiency
 * Mitral atresia
 * Mitral regurgitation deafness skeletal anomalies
 * Mitral valve prolapse, familial, autosomal dominant
 * Mitral valve prolapse, familial, X linked
 * Mitral valve prolapse
 * Miura syndrome
 * Mixed connective tissue disease
 * Mixed Müllerian tumor
 * Mixed receptive-expressive language disorder
 * Mixed sclerosing bone dystrophy

Ml–Mn

 * MLS syndrome
 * MMEP syndrome
 * MMT syndrome
 * MN1
 * MNGIE syndrome

Mo
Mob–Mom • Mon–Moo • Mor–Moy

Mob–Mom

 * Möbius syndrome
 * MODY syndrome
 * Möbius axonal neuropathy hypogonadism
 * Moerman Van den berghe Fryns syndrome
 * Moeschler–Clarren syndrome
 * Mohr syndrome
 * Mohr–Tranebjærg syndrome
 * Mollica–Pavone–Antener syndrome
 * Molluscum contagiosum
 * Moloney syndrome
 * Molybdenum cofactor deficiency
 * MOMO syndrome

Mon–Moo

 * Mondini dysplasia
 * Mondor's disease
 * Monge's disease
 * Monilethrix
 * Monoamine oxidase A deficiency
 * Monoclonal gammopathy of undetermined significance
 * Monodactyly tetramelic
 * Mononen–Karnes–Senac syndrome
 * Mononeuritis multiplex
 * Monosomy 8q12 21
 * Monosomy 8q21 q22
 * Monosomy X
 * Montefiore syndrome
 * Moore–Federman syndrome
 * Moore–Smith–Weaver syndrome

Mor–Moy

 * Morel's ear
 * Moreno–Zachai–Kaufman syndrome
 * Morgani–Turner–Albright syndrome
 * Morgellons disease
 * Morillo–Cucci–Passarge syndrome
 * Morphea scleroderma
 * Morphea, generalized
 * Morquio disease, type A
 * Morquio disease, type B
 * Morquio syndrome
 * Morrison–Young syndrome
 * Morse–Rawnsley–Sargent syndrome
 * Motor neuron disease
 * Motor neuro-ophthalmic disorders
 * Motor neuropathy peripheral dysautonomia
 * Motor neuropathy
 * Motor sensory neuropathy type 1 aplasia cutis congenita
 * Mounier-Kuhn syndrome
 * Mount–Reback syndrome
 * Mousa Al din Al Nassar syndrome
 * Moyamoya disease

Mp–Mt

 * MPO deficiency
 * MPS III-A
 * MPS III-B
 * MPS III-C
 * MPS III-D
 * MPS VI
 * MRKH Syndrome (Müllerian agenesis)
 * MSBD syndrome
 * MTHFR deficiency

Mu
Muc–Mue • Mul • Mum–Mut

Muc–Mue

 * Mucha–Habermann disease
 * Muckle–Wells syndrome
 * Mucoepithelial dysplasia
 * Mucolipidosis type 1
 * Mucolipidosis type 3
 * Mucolipidosis type 4
 * Mucopolysaccharidosis type 3
 * Mucopolysaccharidosis type 4
 * Mucopolysaccharidosis type I Hurler syndrome
 * Mucopolysaccharidosis type I Hurler/Scheie syndrome
 * Mucopolysaccharidosis type I Scheie syndrome
 * Mucopolysaccharidosis type II Hunter syndrome- mild form
 * Mucopolysaccharidosis type II Hunter syndrome- severe form
 * Mucopolysaccharidosis type IV-A Morquio syndrome
 * Mucopolysaccharidosis type IV-B
 * Mucopolysaccharidosis type V
 * Mucopolysaccharidosis type VI Maroteaux-Lamy - severe, intermediate
 * Mucopolysaccharidosis type VII Sly syndrome
 * Mucopolysaccharidosis
 * Mucormycosis
 * Mucosulfatidosis
 * Muenke syndrome

Muli–Mull

 * Mulibrey nanism
 * Müller–Barth–Menger syndrome
 * Müllerian agenesis
 * Müllerian aplasia
 * Müllerian derivatives lymphangiectasia polydactyly
 * Müllerian derivatives, persistent
 * Müllerian duct abnormalities galactosemia
 * Mulliez–Roux–Loterman syndrome

Multic–Multin

 * Multicentric osteolysis nephropathy
 * Multicentric reticulohistiocytosis
 * Multifocal heterotopia
 * Multifocal motor neuropathy
 * Multifocal ventricular premature beats
 * Multi-infarct dementia
 * Multinodular goiter cystic kidney polydactyly

Multip
Multiple a – Multiple p Multiple s – Multiple v
 * Multiple acyl-CoA deficiency
 * Multiple carboxylase deficiency, biotin responsive
 * Multiple carboxylase deficiency, late onset
 * Multiple carboxylase deficiency, propionic acidemia
 * Multiple chemical sensitivity
 * Multiple congenital anomalies mental retardation, growth failure and cleft lip palate
 * Multiple congenital contractures
 * Multiple contracture syndrome Finnish type
 * Multiple endocrine neoplasia type 1
 * Multiple endocrine neoplasia, type 2
 * Multiple fibrofolliculoma familial
 * Multiple hereditary exostoses
 * Multiple joint dislocations metaphyseal dysplasia
 * Multiple myeloma
 * Multiple organ failure
 * Multiple pterygium syndrome lethal type
 * Multiple pterygium syndrome
 * Multiple sclerosis ichthyosis factor VIII deficiency
 * Multiple sclerosis
 * Multiple subcutaneous angiolipomas
 * Multiple sulfatase deficiency
 * Multiple synostoses syndrome 1
 * Multiple system atrophy
 * Multiple vertebral anomalies unusual facies

Mum–Mut

 * Mumps
 * Münchausen syndrome
 * Münchausen syndrome by proxy
 * Muscle-eye-brain syndrome
 * Muscular atrophy ataxia retinitis pigmentosa diabetes mellitus
 * Muscular dystrophy congenital infantile cataract hypogonadism
 * Muscular dystrophy congenital, merosin negative
 * Muscular dystrophy, facioscapulohumeral
 * Muscular dystrophy Hutterite type
 * Muscular dystrophy limb girdle type 2A, Erb type
 * Muscular dystrophy limb-girdle autosomal dominant
 * Muscular dystrophy limb-girdle type 2B, Myoshi type
 * Muscular dystrophy limb-girdle with beta-sarcoglycan deficiency
 * Muscular dystrophy limb-girdle with delta-sarcoglyan deficiency
 * Muscular dystrophy white matter spongiosis
 * Muscular dystrophy, congenital, merosin-positive
 * Muscular dystrophy, Duchenne and Becker type
 * Muscular dystrophy
 * Muscular fibrosis multifocal obstructed vessels
 * Muscular phosphorylase kinase deficiency
 * Mutations in estradiol receptor

My
Mya–Myc • Mye–Myi • Myo • Myx

Mya–Myc

 * Myalgia eosinophilia associated with tryptophan
 * Myalgic encephalomyelitis
 * Myasthenia gravis congenital
 * Myasthenia gravis
 * Myasthenia, familial
 * Mycetoma
 * Mycobacterium avium complex infection
 * Mycoplasmal pneumonia
 * Mycosis fungoides lymphoma
 * Mycosis fungoides, familial
 * Mycosis fungoides
 * Mycositis fungoides

Mye–Myi

 * Myelinopathy
 * Myelitis
 * Myelocerebellar disorder
 * Myelodysplasia
 * Myelodysplastic syndromes
 * Myelofibrosis, idiopathic
 * Myelofibrosis
 * Myelofibrosis-osteosclerosis
 * Myeloid splenomegaly
 * Myeloperoxidase deficiency
 * Myhre–Ruvalcaba–Graham syndrome
 * Myhre–Ruvalcaba–Kelley syndrome
 * Myhre–School syndrome
 * Myhre syndrome
 * Myiasis

Myoa–Myon

 * Myoadenylate deaminase deficiency
 * Myocarditis
 * Myocardium disorder
 * Myoclonic dystonia
 * Myoclonic epilepsy
 * Myoclonic epilepsy with ragged red fibres (MERRF syndrome)
 * Myoclonic progressive familial epilepsy
 * Myoclonus ataxia
 * Myoclonus cerebellar ataxia deafness
 * Myoclonus epilepsy partial seizure
 * Myoclonus hereditary progressive distal muscular atrophy
 * Myoclonus progressive epilepsy of Unverricht and Lundborg
 * Myoclonus
 * Myofibrillar lysis
 * Myofibroblastic tumors
 * Myoglobinuria dominant form
 * Myoglobinuria recurrent
 * Myoglobinuria
 * Myoneurogastrointestinal encephalopathy syndrome

Myop

 * Myopathy and diabetes mellitus
 * Myopathy cataract hypogonadism
 * Myopathy congenital multicore with external ophthalmoplegia
 * Myopathy growth and mental retardation hypospadias
 * Myopathy Hutterite type
 * Myopathy mitochondrial cataract
 * Myopathy Moebius Robin syndrome
 * Myopathy ophthalmoplegia hypoacousia areflexia
 * Myopathy tubular aggregates
 * Myopathy with lactic acidosis and sideroblastic anemia
 * Myopathy with lysis of myofibrils
 * Myopathy, centronuclear
 * Myopathy, desmin storage
 * Myopathy, McArdle type
 * Myopathy, myotubular
 * Myopathy, X-linked, with excessive autophagy
 * Myopathy
 * Myophosphorylase deficiency
 * Myopia
 * Myopia, infantile severe
 * Myopia, severe
 * Myotubular myopathy

Myos–Myot

 * Myositis ossificans post-traumatic
 * Myositis ossificans progressiva
 * Myositis ossificans
 * Myositis, inclusion body
 * Myositis
 * Myotonia atrophica
 * Myotonia mental retardation skeletal anomalies

Myx

 * Myxedema
 * Myxoid liposarcoma
 * Myxoma-spotty pigmentation-endocrine overactivity
 * Myxomatous peritonitis
 * Myxozoa