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• Machado-Joseph Disease (MJD)
• Maine Disability Resources
• Malignant Hyperthermia
• Managed Care
• Mandibulofacial Dysostosis
• Maple Syrup Urine Disease
• Marden-Walker Syndrome
• Marker X Syndrome
• Marfan Syndrome
• Maroteaux-Lamy Syndrome
• Martin-Bell Syndrome
• Maryland Disability Resources
• Mastocytosis
• Massachusetts Disability Resources
• McCune-Albright Syndrome
• Medicaid  
• Medical Records - Online
• Medical Supply Vendors
• Mediterranean Fever
• Medium-Chain Acyl-CoA Dehydrogenase Deficiency (MCAD)
• Memory Aids - See Reminder Technology / Memory Aids
• Meniere Syndrome
• Menkes Disease
• Mental Health Issues
• Mental Health Parity Act
• Mental Retardation
• Metabolic Disorders
• Metachromatic Leukodystrophy
• Michigan Disability Resources
• Microcephaly
• Microphthalmia / Anophthalmia
• Microtia
• Military Family Resources
• Minnesota Disability Resources
• Mississippi Disability Resources
• Missouri Disability Resources
• Mitochondrial Disorders
• Moebius Syndrome
• Monkeys, Helper – See Service Dogs & Animals
• Montana Disability Resources
• Motility Disorders
• Motor Neurone Disease
• Movies - TV, Film & Movies - People with Disabilities
• Moyamoya Disease
• Mucolipidosis Type IV
• Mucopolysaccharidosis
• Multiple Cartilaginous Exostoses
• Multiple Endocrine Neoplasia
• Multiple Hereditary Exostosis (MHE)
• Multiple Sclerosis
• Multiple System Atrophy
• Muscular Dystrophy
• Music Resources
• Music Therapy
• Mutism
• Myalgic Encephalomyelitis (ME)
• Myasthenia Gravis
• Myelin Disorders
• Myelodysplastic Syndrome
• Myelofibrosis
• Myeloproliferative Disorders
• Myoclonus
• Myositis
• Myotubular Myopathy