NA | |
| Nager Syndrome | |
| Nail Patella Syndrome | |
| Nail Patella Syndrome Networking/Support Group | |
| Nail Patella Syndrome Networking/Support Group - Nail Patella Syndrome | |
| NAMI (National Alliance on Mental Illness) | |
| NAMI (National Alliance on Mental Illness) - Families of Mentally Ill | |
| NAMI Connection Support Groups | |
| NAMI Connection Support Groups - Mental Health Consumers | |
| Nar-Anon Family Group Headquarters, Inc. | |
| Nar-Anon Family Group Headquarters, Inc. - Drug Abuse | |
| NARA (Not A Rose Assoc.) / BOSS (Body Odor Support Service) | |
| NARA (Not A Rose Assoc.) / BOSS (Body Odor Support Service) - Odor (Body / Breath) | |
| Narcolepsy | |
| Narcolepsy Network | |
| Narcolepsy Network - Narcolepsy | |
| Narcotics Anonymous | |
| Narcotics Anonymous - Drug Abuse | |
| NATHHAN (Nat'l Challenged Homeschoolers) | |
| NATHHAN (Nat'l Challenged Homeschoolers) - Parents of Disabled / Ill Children | |
| NATHHAN (National Challenged Homeschoolers) | |
| NATHHAN (National Challenged Homeschoolers) - Parenting / Grandparenting | |
| National Abortion Federation | |
| National Abortion Federation - Pregnancy / Childbirth Helpline | |
| National Accessible Apartment Clearinghouse | |
| National Accessible Apartment Clearinghouse | |
| National Accessible Apartment Clearinghouse - Disability Helpline |  Top |
| National Accessible Apartment Clearinghouse - Housing Helpline | |
| National Adoption Center | |
| National Adoption Center - Adoption / Foster Care Helpline | |
| National Adrenal Diseases Foundation | |
| National Adrenal Diseases Foundation - Addison's/Adrenal Disease | |
| National Alliance for Research on Schizophrenia and Depression | |
| National Alliance for Research on Schizophrenia and Depression - Mental Health Helpline | |
| National Alopecia Areata Foundation | |
| National Alopecia Areata Foundation - Alopecia Areata | |
| National Amputation Foundation, Inc. | |
| National Amputation Foundation, Inc. - Amputation / Limb Deficiency | |
| National Aphasia Association | |
| National Aphasia Association - Aphasia | |
| National Association for Children of Alcoholics | |
| National Association for Children of Alcoholics | |
| National Association for Children of Alcoholics - Alcohol Helpline | |
| National Association for Children of Alcoholics - Drug Abuse Helpline | |
| National Association for Continence | |
| National Association for Continence - Incontinence Helpline | |
| National Association for Family Child Care | |
| National Association for Family Child Care - Child Care Helpline | |
| National Association for Parents of Children with Visual Impairments | |
| National Association for Parents of Children with Visual Impairments - Blind / Visually Impaired | |
| National Association for Pseudoxanthoma Elasticum | |
| National Association for Pseudoxanthoma Elasticum - Pseudoxanthoma Elasticum | Top |
| National Association for the Relief of Paget's Disease | |
| National Association for the Relief of Paget's Disease - Paget's Disease | |
| National Association for Visually Handicapped | |
| National Association for Visually Handicapped - Blind / Visually Impaired | |
| National Association of Anorexia Nervosa and Associated Disorders, Inc. | |
| National Association of Anorexia Nervosa and Associated Disorders, Inc. - Eating Disorders | |
| National Association of Hospital Hospitality Houses | |
| National Association of Hospital Hospitality Houses - Hospital Helpline | |
| National Association of Mothers' Centers | |
| National Association of Mothers' Centers | |
| National Association of Mothers' Centers - Childbirth / Breastfeeding | |
| National Association of Mothers' Centers - Parenting / Grandparenting | |
| National Association of People With A.I.D.S. | |
| National Association of People With A.I.D.S. - AIDS | |
| National Association of the Deaf | |
| National Association of the Deaf - Deaf / Hearing Impaired / Tinnitus / Meniere's | |
| National Association to Advance Fat Acceptance (NAAFA) | |
| National Association to Advance Fat Acceptance (NAAFA) - Overweight | |
| National Ataxia Foundation | |
| National Ataxia Foundation - Ataxia | |
| National BMT LINK | |
| National BMT LINK - Marrow Transplants Helpline | |
| National Brain Tumor Foundation | |
| National Brain Tumor Foundation - Brain Injury / Brain Tumor / Coma | |
| National Center for Chromosome Inversions | Top |
| National Center for Chromosome Inversions - Chromosome Disorders | |
| National Center for Environmental Health Strategies | |
| National Center for Environmental Health Strategies - Chemical Hypersensitivity / Environmental Illn | |
| National Center for Learning Disabilities | |
| National Center for Learning Disabilities - Dyslexia / Learning Disabilities Helpline | |
| National Center for Missing Adults (NCMA) | |
| National Center for Missing Adults (NCMA) - Crime Victims / Offenders | |
| National Center for Missing and Exploited Children | |
| National Center for Missing and Exploited Children - Missing Children/Adults Helpline | |
| National Center for Victims of Crime | |
| National Center for Victims of Crime - Crime Victims Helpline | |
| National Center on Complementary and Alternative Medicine | |
| National Center on Complementary and Alternative Medicine - Health Helpline | |
| National Child Care Information Center | |
| National Child Care Information Center - Child Care Helpline | |
| National Clearinghouse for Alcohol and Drug Information | |
| National Clearinghouse for Alcohol and Drug Information | |
| National Clearinghouse for Alcohol and Drug Information - Alcohol Helpline | |
| National Clearinghouse for Alcohol and Drug Information - Drug Abuse Helpline | |
| National Coalition for Cancer Survivorship | |
| National Coalition for Cancer Survivorship - Cancer | |
| National Congenital Cytomegalovirus Disease Registry | |
| National Congenital Cytomegalovirus Disease Registry - Congenital Cytomegalovirus Disease | |
| National Council on Aging | |
| National Council on Aging - Aging / Senior Citizens Helpline | Top |
| National Council on Alcoholism and Drug Dependence | |
| National Council on Alcoholism and Drug Dependence | |
| National Council on Alcoholism and Drug Dependence - Alcohol Helpline | |
| National Council on Alcoholism and Drug Dependence - Drug Abuse Helpline | |
| National Council on Independent Living | |
| National Council on Independent Living - Disability Helpline | |
| National Council on Problem Gambling | |
| National Council on Problem Gambling - Gambling Helpline | |
| National Criminal Justice Reference Service | |
| National Criminal Justice Reference Service - Crime Victims Helpline | |
| National Cued Speech Association | |
| National Cued Speech Association - Deaf Helpline | |
| National Diabetes Education Program | |
| National Diabetes Education Program - Diabetes Helpline | |
| National Dissemination Center for Children with Disabilities | |
| National Dissemination Center for Children with Disabilities - Disability Helpline | |
| National Do Not Call Registry | |
| National Do Not Call Registry - Consumer Helpline | |
| National Domestic Abuse Helpline for Men and Women | |
| National Domestic Abuse Helpline for Men and Women - Domestic Violence Helpline | |
| National Domestic Violence Hotline | |
| National Domestic Violence Hotline - Domestic Violence Helpline | |
| National Donor Family Council | |
| National Donor Family Council - Bereavement (General) | |
| National Down Syndrome Congress | Top |
| National Down Syndrome Congress - Mental Retardation / Down Syndrome | |
| National Down Syndrome Society | |
| National Down Syndrome Society - Down Syndrome Helpline | |
| National Dysautonomia Research Foundation | |
| National Dysautonomia Research Foundation - Dysautonomia | |
| National Eating Disorders Association | |
| National Eating Disorders Association - Eating Disorders Helpline | |
| National Eczema Association | |
| National Eczema Association - Eczema | |
| National Eosinophilia Myalgia Syndrome Network | |
| National Eosinophilia-Myalgia Syndrome Network | |
| National Eosinophilia-Myalgia Syndrome Network - Autoimmune Disorders | |
| National Fallen Firefighters Foundation Survivors Support Network | |
| National Fallen Firefighters Foundation Survivors Support Network - Bereavement (General) | |
| National Family Caregivers Association | |
| National Family Caregivers Association - Caregivers / Families of Nursing Home Residents | |
| National Family Partnership | |
| National Family Partnership - Drug Abuse | |
| National Federation of the Blind | |
| National Federation of the Blind - Blind / Visually Impaired | |
| National Fibromyalgia Association | |
| National Fibromyalgia Association - Fibromyalgia | |
| National Foster Parent Association, Inc. | |
| National Foster Parent Association, Inc. - Foster Parents / Children | |
| National Foundation for Ectodermal Dysplasias | Top |
| National Foundation for Ectodermal Dysplasias - Ectodermal Dysplasias | |
| National Foundation for Transplants | |
| National Foundation for Transplants - Organ Donation Helpline | |
| National Gaucher Foundation | |
| National Gaucher Foundation - Gaucher Disease | |
| National Gay and Lesbian Task Force | |
| National Gay and Lesbian Task Force - Sexual Orientation / Gay and Lesbian | |
| National Graves' Disease Foundation | |
| National Graves' Disease Foundation - Graves Disease | |
| National Gulf War Resource Center, Inc. | |
| National Gulf War Resource Center, Inc. - Veterans / Military | |
| National Health Information Center | |
| National Health Information Center - Health Helpline | |
| National Hemophilia Foundation | |
| National Hemophilia Foundation - Hemophilia | |
| National Hispanic PreNatal Helpline | |
| National Hispanic PreNatal Helpline - Pregnancy / Childbirth Helpline | |
| National Hospice and Palliative Care Organization | |
| National Hospice and Palliative Care Organization - Hospice Helpline | |
| National Hydrocephalus Foundation (NHF) | |
| National Hydrocephalus Foundation (NHF) - Hydrocephalus | |
| National Immunizations Information Hotline | |
| National Immunizations Information Hotline - Health Helpline | |
| National Inhalant Prevention Center | |
| National Inhalant Prevention Center - Drug Abuse Helpline | Top |
| National Institute for Occupational Safety and Health | |
| National Institute for Occupational Safety and Health - Health Helpline | |
| National Institute for Rehab Engineering | |
| National Institute for Rehab Engineering - Disability Helpline | |
| National Institute of Corrections | |
| National Institute of Corrections - Crime Victims Helpline | |
| National Institute of Diabetes and Digestive and Kidney Diseases | |
| National Institute of Diabetes and Digestive and Kidney Diseases | |
| National Institute of Diabetes and Digestive and Kidney Diseases | |
| National Institute of Diabetes and Digestive and Kidney Diseases | |
| National Institute of Diabetes and Digestive and Kidney Diseases | |
| National Institute of Diabetes and Digestive and Kidney Diseases - Diabetes Helpline | |
| National Institute of Diabetes and Digestive and Kidney Diseases - Gastrointestinal Disorders Helpli | |
| National Institute of Diabetes and Digestive and Kidney Diseases - Kidney Disease Helpline | |
| National Institute of Diabetes and Digestive and Kidney Diseases - Metabolic Disorder Helpline | |
| National Institute of Diabetes and Digestive and Kidney Diseases - Urologic Disease Helpline | |
| National Institute of Mental Health Information Center | |
| National Institute of Mental Health Information Center - Mental Health Helpline | |
| National Institute of Mental Health Information Line | |
| National Institute of Mental Health Information Line - Depression Helpline | |
| National Institute of Neurological Disorders | |
| National Institute of Neurological Disorders - Neurological Impairment Helpline | |
| National Institute on Aging | |
| National Institute on Aging - Aging / Senior Citizens Helpline | |
| National Institute on Deafness and Other Communication Disorders | Top |
| National Institute on Deafness and Other Communication Disorders - Deaf Helpline | |
| National Jewish Lung Line | |
| National Jewish Lung Line - Lung Disease Helpline | |
| National Job Corps Information Line | |
| National Job Corps Information Line | |
| National Job Corps Information Line - Careers Helpline | |
| National Job Corps Information Line - Education Helpline | |
| National Keratoconus Foundation | |
| National Keratoconus Foundation - Blind / Visually Impaired | |
| National Kidney Foundation | |
| National Kidney Foundation - Kidney Disease Helpline | |
| National Kontakt (NAKOS) | |
| National Lead Information Center and Clearinghouse | |
| National Lead Information Center and Clearinghouse - Environmental Helpline | |
| National Library of Medicine | |
| National Library of Medicine - Health Helpline | |
| National Life Center, Inc. | |
| National Life Center, Inc. - Pregnancy / Childbirth Helpline | |
| National Literacy Hotline | |
| National Literacy Hotline - Literacy Helpline | |
| National Lyme Disease Foundation | |
| National Lyme Disease Foundation - Lyme Disease Helpline | |
| National Lymphedema Network Inc. | |
| National Lymphedema Network Inc. - Lymphedema | |
| National Marfan Foundation | Top |
| National Marfan Foundation - Marfan Syndrome | |
| National Marrow Donor Program | |
| National Marrow Donor Program - Marrow Transplants Helpline | |
| National Mental Health Association | |
| National Mental Health Association - Mental Health Helpline | |
| National Mental Health Consumers Self-Help Clearinghouse | |
| National Mental Health Consumers Self-Help Clearinghouse - Mental Health Consumers | |
| National Mental Health Services Information Center | |
| National Mental Health Services Information Center - Mental Health Helpline | |
| National Minority Organ Tissue Transplant Education Program | |
| National Minority Organ Tissue Transplant Education Program - Organ Donation Helpline | |
| National MPS Society | |
| National MPS Society - Mucopolysaccharidoses / Morquio's Syndrome | |
| National Multiple Sclerosis Society | |
| National Multiple Sclerosis Society - Multiple Sclerosis | |
| National Necrotizing Fasciitis Foundation | |
| National Necrotizing Fasciitis Foundation - Necrotizing Fasciitis | |
| National Niemann-Pick Disease Foundation, Inc. | |
| National Niemann-Pick Disease Foundation, Inc. - Niemann Pick Type C | |
| National Organization for Rare Disorders | |
| National Organization for Rare Disorders - Rare Disorders, General | |
| National Organization for Victim Assistance | |
| National Organization for Victim Assistance - Crime Victims / Offenders | |
| National Organization for Women | |
| National Organization for Women - Women's Issues | Top |
| National Organization of Mothers of Twins Clubs | |
| National Organization of Mothers of Twins Clubs - Twins and Triplets | |
| National Organization of Parents of Blind Children | |
| National Organization of Parents of Blind Children - Blind / Visually Impaired | |
| National Organization of Single Mothers | |
| National Organization of Single Mothers - Single Parenting | |
| National Organization of Social Security Claimant's Reps | |
| National Organization of Social Security Claimant's Reps | |
| National Organization of Social Security Claimant's Reps - Attorney Helpline | |
| National Organization of Social Security Claimant's Reps - Social Security Helpline | |
| National Organization on Fetal Alcohol Syndrome | |
| National Organization on Fetal Alcohol Syndrome - Alcohol Helpline | |
| National Osteoporosis Foundation | |
| National Osteoporosis Foundation - Osteoporosis | |
| National Ovarian Cancer Coalition | |
| National Ovarian Cancer Coalition - Cancer | |
| National Parkinson Foundation | |
| National Parkinson Foundation - Parkinson's Disease | |
| National Parkinson's Foundation | |
| National Parkinson's Foundation - Parkinson's Helpline | |
| National Patient Travel Center | |
| National Patient Travel Center - Transportation Helpline | |
| National Pediculosis Association | |
| National Pesticide Information Center | |
| National Pesticide Information Center - Pesticide Helpline | Top |
| National Potter Syndrome Support Group | |
| National PRIDE Youth Programs | |
| National PRIDE Youth Programs - Drug Abuse Helpline | |
| National Psoriasis Foundation | |
| National Psoriasis Foundation - Psoriasis | |
| National Reference Center for Bioethics Literature | |
| National Reference Center for Bioethics Literature - Health Helpline | |
| National Rehabilitation Information Center | |
| National Rehabilitation Information Center - Rehabilitation Helpline | |
| National Reye's Syndrome | |
| National Reye's Syndrome - Reye's Syndrome Helpline | |
| National Reye's Syndrome Foundation | |
| National Reye's Syndrome Foundation - Reye's Syndrome | |
| National Rosacea Society | |
| National Rosacea Society - Rosacea Helpline | |
| National Runaway Switchboard | |
| National Runaway Switchboard - Runaways Hotline | |
| National Scoliosis Foundation | |
| National Scoliosis Foundation - Scoliosis | |
| National Self-Help Clearinghouse | |
| National Self-Help Clearinghouse | |
| National Self-Help Clearinghouse - Clearinghouse - New York | |
| National Self-Help Clearinghouse - CLEARINGHOUSES | |
| National Sexual Violence Resource Center | |
| National Sexual Violence Resource Center - Rape Hotline | Top |
| National Society for MVP and Dysautonomia | |
| National Society For MVP and Dysautonomia | |
| National Society For MVP and Dysautonomia - Dysautonomia | |
| National Society for MVP and Dysautonomia - Heart Disease | |
| National Spasmodic Dysphonia Association | |
| National Spasmodic Dysphonia Association - Spasmodic Dysphonia | |
| National Spasmodic Torticollis Association | |
| National Spasmodic Torticollis Association - Spasmodic Torticollis | |
| National Spinal Cord Injury Association | |
| National Spinal Cord Injury Association - Disabilities (General) / Spinal Cord Injury | |
| National Spinal Cord Injury Hotline | |
| National Spinal Cord Injury Hotline - Spinal Cord Injury Helpline | |
| National Stroke Association | |
| National Stroke Association - Stroke | |
| National Students of Ailing Mothers and Fathers Support Network | |
| National Students of Ailing Mothers and Fathers Support Network | |
| National Students of Ailing Mothers and Fathers Support Network - Bereavement (General) | |
| National Students of Ailing Mothers and Fathers Support Network - Youth / Students | |
| National Stuttering Association | |
| National Stuttering Association - Speech / Stuttering | |
| National Tay-Sachs and Allied Diseases Association | |
| National Tay-Sachs and Allied Diseases Association - Tay-Sachs Disease | |
| National Teen Dating Abuse Helpline | |
| National Teen Dating Abuse Helpline - Rape Hotline | |
| National Urea Cycle Disorders Foundation | Top |
| National Urea Cycle Disorders Foundation - Urea Cycle Disorders | |
| National Vaccine Information Center | |
| National Vaccine Information Center - Vaccine | |
| National Veterans Service Fund, Inc. | |
| National Veterans Service Fund, Inc. - Military / Veterans Helpline | |
| National Vulvodynia Association, Inc. | |
| National Vulvodynia Association, Inc. - Vulvar Disorders | |
| National Women's Health Information Center | |
| National Women's Health Information Center - Health Helpline | |
| National Women's Health Resource Center | |
| National Women's Health Resource Center - Health Helpline | |
NB | |
| NBIA Disorders Association | |
| NBIA Disorders Association - Hallerevorden-Spatz | |
NE | |
| NE Dubowitz Syndrome Support | |
| NE Dubowitz Syndrome Support - Dubowitz Syndrome | |
| Near Death Experience | |
| Nebraska Self-Help Information Services | |
| Nebraska Self-Help Information Services - Clearinghouse - Nebraska | |
| Necrotizing Fasciitis | |
| Nemaline Myopathy Support Group | |
| Nemaline Myopathy Support Group - Nemaline Myopathy, Congenital | |
| Nemaline Myopathy, Congenital | |
| Nephrogenic Diabetes Insipidus Foundation - Nephrogenic Diabetes Insipidus Helpline | |
| Nephrogenic Diabetes Insipidus Helpline | |
| Networking for Ill / Disabled | Top |
| Neuro-Cardiogenic Syncope | |
| Neurocardiogenic Syncope Fainting List | |
| Neurocardiogenic Syncope Fainting List - Neuro-Cardiogenic Syncope | |
| Neurofibromatosis | |
| Neurofibromatosis, Inc. | |
| Neurofibromatosis, Inc. - Neurofibromatosis | |
| Neurological Disorders | |
| Neurological Impairment Helpline | |
| Neuropathy | |
| Neuropathy Association | |
| Neuropathy Association - Neuropathy | |
| Neutropenia | |
| Neutropenia Support Association, Inc. | |
| Nevus Network | |
| Nevus Network - Nevus, Congenital | |
| Nevus Outreach, Inc. | |
| Nevus Outreach, Inc. - Nevus, Congenital | |
| Nevus, Congenital | |
| New England Patients' Rights Group | |
| New England Patients' Rights Group - Patients Rights | |
| New England Retinoblastoma Parents Support Group | |
| New Jersey Self-Help Group Clearinghouse | |
| New Jersey Self-Help Group Clearinghouse - Clearinghouse - New Jersey | |
| New York City Self-Help Center | |
| New York City Self-Help Center - Clearinghouse - New York | Top |
NI | |
| Niagara Self-Help Clearinghouse | |
| Niagara Self-Help Clearinghouse - Clearinghouse - New York | |
| Nicotine Anonymous World Services | |
| Nicotine Anonymous World Services - Smoking | |
| Nicotine Helpline | |
| Niemann Pick Type C | |
| NIH National Heart, Lung and Blood Institute Helpline | |
| NIH National Heart, Lung and Blood Institute Helpline - Heart Helpline | |
| NIH Osteoporosis and Related Bone Diseases Resource Center | |
| NIH Osteoporosis and Related Bone Diseases Resource Center | |
| NIH Osteoporosis and Related Bone Diseases Resource Center - Metabolic Disorder Helpline | |
| NIH Osteoporosis and Related Bone Diseases Resource Center - Paget's Helpline | |
| NINE (National Infertility Network Exchange) | |
| NINE (National Infertility Network Exchange) - Infertility / Childlessness | |
| NineLine | |
| NineLine - Youth Helpline | |
NK | |
| NKH International Family Network | |
NL | |
| NLD-In-Common | |
| NLD-In-Common - Learning Disability / Attention Deficit Disorder | |
NO | |
| No Kidding! | |
| No Kidding! | |
| No Kidding! - Infertility / Childlessness | |
| No Kidding! - Marriage / Family | |
| NOAH (National Organization for Albinism and Hypopigmentation) | |
| NOAH (National Organization for Albinism and Hypopigmentation) - Albinism | Top |
| Nonketotic Hyperglycemia | |
| Noonan Syndrome | |
| Noonan Syndrome Support Group | |
| Noonan Syndrome Support Group - Noonan Syndrome | |
| NORD (National Organization for Rare Disorders) | |
| NORD (National Organization for Rare Disorders) - Health Helpline | |
| NORM (National Organization of Restoring Men) | |
| NORM (National Organization of Restoring Men) - Men's Issues | |
| Norsk Selvhjelpsforum | |
| North American Conference of Separated and Divorced Catholics | |
| North American Conference of Separated and Divorced Catholics | |
| North American Conference of Separated and Divorced Catholics - Separation / Divorce | |
| North American Conference of Separated and Divorced Catholics - Widows / Widowers | |
| North American Council on Adoptable Children | |
| North American Council on Adoptable Children - Adoption | |
| North American Menopause Society | |
| North American Menopause Society - Women's Helpline | |
| North American Society for Childhood Onset Schizophrenia | |
| North American Society for Childhood Onset Schizophrenia - Families of Mentally Ill | |
| NOVA (National Organization of Vascular Anomalies) | |
| NOVA (National Organization of Vascular Anomalies) - Hemangioma | |
NY | |
| Nystagmus | |
