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MUMS: List of Disorders M Number in parentheses indicates number of matches. * indicates there is a support group which covers that diagnosis.

• MELAS Mitochondrial Encephalopathy Lactic Acidosis Syndrome (7) *
• Macrocephaly (large head) (29) http://www.macrocephaly-cmtc.com/
• Macrodactyly & Hygroma or Lymphoma (3)
• Macrodactyly (Large toes or fingers) (2)
• Macroglossia (6)
• Macrosomia (abnormally large body) (2)
• Macular Degeneration (4) *
• Macular Degeneration (Infantile) *
• Maffucci Syndrome (Enchondromatosis & Hemangiomas) (7) **
• Male Pseudohermaphroditism (2) *
• Malignant Atrophic Papulosis(Degos disease) www.degosdisease.com
• Malignant Hyperthermia (12) *
• Malrotation of the Intestines (31)
• Mandibuloacral Dysplasia(Craniomandibular Dermatodysostis) (3)
• Manic Depression, Bipolar (64) *
• Manic Depressive Schizophrenia (19) *
• Mannosidosis (Glycogen Storage) (4)**
• Maple Syrup Urine Disease (7) *
• Marcus Gunn Phenomenon (Jaw Winking) (3)
• Marden-Walker Syndrome (7)
• Marfan Syndrome (12) *
• Marfan Syndrome & Beals Syndrome (2) *
• Marinesco-Sjogren Syndrome (1) www.marinesco-sjogren.org
• Maroteaux-Malmut Syndrome (1)
• Marshall-Smith Syndrome (1)
• Mast Cell Disease (Urticaria Pigmentosa) (9)
• Mastocytosis (Urticaria Pigmentosa) (9) www.mastokids.org
• Mayer-Rokitansky-Kuster-Hauser Syndrome (absence of uterus) (7)
• McArdle Disease (1) *
• McCune-Albright Syndrome (6) **
• Measles Vaccine (bad reaction) (9) *
• Meckel-Gruber Syndrome (2)
• Meckels Diverticulum (2)
• Mediterranean Fever, Familial (2) Of and About Familial Mediterranean Fever (FMF)
• Medium-Chain Acyl-CoA Dehydrogenase Deficiency (MCAD) (10 ) * www.fodsupport.org
• Medullary Cancer of the Thyroid (1)
• Medulloblastoma (cancerous brain tumor) (12) *
• Medullo-Epithelioma (cancerous eye tumor) (1)
• Megacisternamagna (form of Band Hetertopia) (3)
• Megacystic (Intestinal Hyoperistalsis) (6)
• Megacystic Microcolon Intestinal Hypoperastalsis (Berdon's) (6)
• Megalencephaly (large head) (16)
• Megalacornea (large cornea) (1)
• Meischer-Melkersson-Rosenthal Syndrome (2)
• Melanoma, Malignant (1)
• Melkersson-Rosenthal Syndrome (2)
• Melnick-Fraser Syndrome (Branchio-Oto-Renal Dysplasia) (7) *
• Melnick-Needles Syndrome (Osteodysplasty) (3) *
• Melorheostosis (bone grows too much) (1)
• Meniere Disease (3) *
• Meningitis (68)
• Meningitis, Asceptic (1)
• Meningitis, Bacteria (4)
• Meningitis, Meningincoccal-Neisseria (2)
• Meningitis, Spinal (1)
• Meningitis, Spinal Citrobactor (1)
• Meningococcemia (1)
• Meningoencephalitis Septicaemia (3)
• Meningoencephalocele (1)
• Menkes Syndrome (10) *
• Mental Retardation (Cognitively Impaired) (437) *
• Metachromatic Leukodystrophy (19) *
• Metabolic Diseases (213) *
• Metabolic Disease, Undiagnosed (23) *
• Metaphyseal Chondrodysplasia, Schmid Type (7)
• Metatropic Dwarfism (3) *
• Metatrophic Dysplasia Dwarfism (Kniest Syndrome) (2) **
• Methemoglobinemia (Blue Baby Syndrome) (6) *
• Methylenetetrahydrofolate Reductase (MTH) (2)
• Methylmalonic Acidemia (54) *
• Methylmalonic Acidemia & Homocystinuria (CBLC) (6)
• Methylmalonic Acidemia Cbl A (3) *
• Methylmalonic Acidemia Cbl C (3) *
• Methylmalonic Acidemia Mut 0 (5)*
• Methylmalonic Aciduria (4) *
• Metochromatic Leukodystrophy (1)
• Micro Lissenchephaly (1)
• Microcephalic Osteodysplastic Primordial Dwarfism Type II (MOPD II) (1)
• Microcephaly (430) *
• Microgastria (small stomach) (1)
• Micrognathia (small or underdeveloped jaw) (16)
• Micropenis (small penis) (12)
• Microphthalmia, Bilateral (both eyes small) (9) *
• Microphthalmia, Unilateral (one small eye) (7) *
• Micropolyarteritis Nodosa (1)
• Microtia of the Ear (small or absent outer ear) (19) *
• Microtia of the Ears-Bilateral (no outer ears) (3)*
• Micturition Syncope (fainting while urinating) (1)
• Migraine Headaches (36)
• Milk Allergy, life-threatening (10) *
• Miller Syndrome (1) *
• Miller-Dieker Syndrome (Lissencephaly) (9) *
• Milroy Disease (Lymphedema I) (1)
• Minimal Brain Dysfunction (3)
• Minkowski-Chauffard Syndrome (Spherocytosis) (9)
• Mioelectric Arm (3)
• Missing 3rd Vertebrae in Neck (1)
• Mitochondrial Disorders (115) ***
• Mitochondrial Complex I & III (1) ***
• Mitochondrial DNA Depletion Syndrome (1) *
• Mitochondrial Disorders, Undiagnosed (23) ***
• Mitochondrial Encephalopathy (MELAS) (9) *
• Mitochondrial Myopathy Disorders (59) *
• Moebius Syndrome (40) ***
• Moebius Syndrome & Klinefelter Syndrome (1)
• Mohr Syndrome, Oral-Facial-Digital Syndrome Type II (4)
• Mondini's Syndrome (1)
• Monileth, Hair (1)
• Monmyeletic Amyotrophic Sclerosis (ALS) (1)
• Monodactyly (1 digit on hand or foot) (2) *
• Monosomy 3p25.3 (Chromosome 3p-(p25.3) () (1)**
• Monosomy 3p(p25.3) Partial (1)
• Monosomy 3p (26) (1)
• Monosomy 4p (1) *
• Monosomy 5p Trisomy 18p Unbalanced Translocation (1)
• Monosomy 9p (3) *
• Monosomy 21 (3)
• Monosomy 21, Mosaic (4)
• Monosomy 21 der(3)+(3;21)(p26,q22.3-21.ish (1)
• Monostotic Fibrous Dysplasia (1)
• Morning Glory Syndrome (1)
• Morphea Skin Disease (3)
• Morquio Syndrome (Mucopolysaccharidosis, Type IV A) (5) **
• Moyamoya Disease (51) ****
• Moyamoya Disease & Down Syndrome (1)
• Moyamoya Disease & Neurofibromatosis (2)
• Myoclonic Jerks (13)*
• Muckle-Wells Syndrome (Urticaria-Deafness-Amyloidosis) (1)
• Mucocutaneous Lymph Node Syndrome (Kawasaki Syndrome) (14)
• Mucolipidosis II, LeRoy I-Cell Disease (8)
• Mucolipidosis Type IV (2) *
• Mucopolysaccharidosis (59) *
• Mucopolysaccharidosis, Type I, Hurler Syndrome (13) *
• Mucopolysaccharidosis, Type I-H, Hurler-Scheie (1) *
• Mucopolysaccharidosis, Type II, Hunter Syndrome (10) *
• Mucopolysaccharidosis, Type III, Sanfilippo (24) *
• Mucopolysaccharidosis, Type III, Sanfilippo Type A (10) *
• Mucopolysaccharidosis, Type III, Sanfilippo Type B (3) *
• Mucopolysaccharidosis, Type III, Sanfilippo Type C (1) *
• Mucopolysaccharidosis, Type IV, Morquio Syndrome (5) **
• Mucopolysaccharidosis, Type V, I-S, Scheie (4) *
• Muenke Syndrome (form of craniosysnostosis) (1)
• Mullerian Aplasia (absence of uterus) (4)
• Multicystic Encephalomalacia (1)
• Multifocal Motor Neuropathy w/Conduction Block (2)
• Multiple Acyl CoA Dehydrogenase Deficiency (1) *
• Multipel Arterial Occlusive (narrowing) (1)
• Multiple Chemical Sensitivity Syndrome (2)
• Multiple Duplication of Muscles (extra layers of muscles) (1)
• Multiple Enchondromatoses (1) *
• Multiple Endrocrine Neoplasia 11A (MEN 11A) (1)
• Multiple Endrocrine Neoplasia TypeIIB (or type 3) (2)
• Multiple Exostose Osteochondronia (1) *
• Multiple Exostoses Syndrome (1)
• Multiple Lentigene Syndrome (1)
• Multiple Sclerosis (18) *
• Multiple Sulfatase Deficiency (1)
• Munchhausen by Proxy Falsely Accused (6)*
• Muscular Dystrophy (168) *
• Muscular Dystrophy, Becker (4) *
• Muscular Dystrophy, Chondrodystrophic Myotonia (1) *
• Muscular Dystrophy, Congenital, Merosin Deficiency (3) *
• Muscular Dystrophy, Congenital, with Arthrogryposis (1) *
• Muscular Dystrophy, Becker (4)*
• Muscular Dystrophy, Duchenne (45) **
• Muscular Dystrophy, Duchenne & Cystic Fibrosis (1)
• Muscular Dystrophy, Duchenne & Malignant Hypothermia (3) *
• Muscular Dystrophy, Facioscapuloperoneal, Infantile (1) *
• Muscular Dystrophy, Facio-Scapulo-Humeral (3) *
• Muscular Dystrophy, Landouzy-DeJerine (2) * *
• Muscular Dystrophy, Limb-Girdle (1) *
• Muscular Dystrophy, Limb-Girdle Type 21 (1) *
• Muscular Dystrophy, Myotubular, X-Linked (3) *
• Muscular Dystrophy, Progressive Pseudorheumatoid (1) *
• Mutism, Elective (13) **
• Myasthenia Gravis Ocular (1)
• Myasthenia Gravis, Congenital (13) *
• Myotonic Dystrophy (3) *
• Mycosis Fungoides (1)
• Myelin Sheath Deficiency (40) *
• Myelitis, Inflammatory (1)
• Myelofibrosis (2)
• Myelomalacia, Congenital (abnormal softening of the spinal cord) (1)
• Myelodysplastic Syndrome (Refractory Anemia) (3)
• Myelomeningocele (Spina Bifida) (239) *
• Myhre Syndrome (2)
• Myocardial Infarction (1) *
• Myocardial Infarction, Acquired Viral Myocarditis (1) *
• Myoclonic Jerks (13)*
• Myoclonic Siezures (180) *
• Myoclonic Syndrome, Early Infant (1) *
• Myoclonus, General (17) *
• Myocosis Fungoides (1) *
• Myofibromatosis (tumor wrapped around spinal cord) (2)
• Myofibromatosis, Infantile (1)
• Myopathy, Centronuclear (Myotubular) (15) **
• Myositis, Inclusion Body (IBM) (1) *
• Myositis Ossificans (Fibrodysplasia Ossificans Progressiva) (9) *
• Myositis-(infantile with ventilation) (1)
• Myotonic Dystrophy (23) *
• Myotonic Dystrophy & Phenylketonuria (PKU) (1)
• Myotubular Myopathy (Centroneuclear Myopathy) (15) * www.joshuafrase.org
• Myotubular Myopathy X-Linked (3) *