| A Heartbreaking Choice | |
| A Heartbreaking Choice - Death of a Child / Fetal Loss | |
| A Special Wish Foundation | |
| A Special Wish Foundation - Wish Granting for Ill Children Helpline | |
| A-T Children's Project | |
| A-T Children's Project - Ataxia | |
| A.L.S. Association | |
| A.L.S. Association - ALS (Lou Gehrig's Disease) | |
| A.W.A.K.E. (American Sleep Apnea Association) Network Groups | |
| A.W.A.K.E. (American Sleep Apnea Association) Network Groups - Apnea, sleep | |
AA | |
| AABCA (African American Breast Cancer Alliance) | |
| AABCA (African American Breast Cancer Alliance) - Breast Cancer | |
| Aaron's Tracheostomy Page | |
| Aaron's Tracheostomy Page - Tracheostomy | |
| AARP | |
| AARP - Aging / Older Persons | |
| Aarskog Syndrome | |
AB | |
| Ability Online Support Network | |
| Ability Online Support Network | |
| Ability Online Support Network - Disabilities (General) / Spinal Cord Injury | |
| Ability Online Support Network - Life Threatening / Chronic Illness | |
| Abledata | |
| Abledata - Disability Helpline | |
| Abused Guys | |
| Abused Guys - Spouse Abuse / Domestic Violence | |
| Abused Survivors |  Top |
| Abused Survivors | |
| Abused Survivors - Child Abuse (Physical / Emotional) | |
| Abused Survivors - Sexual Abuse / Incest / Rape | |
AC | |
| ACCESS (AirCraft Casualty Emotional Support Services) | |
| ACCESS (AirCraft Casualty Emotional Support Services) - Accident Victims | |
| Access Board | |
| Access Board - Disability Helpline | |
| Accident Victims | |
| Accidents Support Group | |
| Accidents Support Group - Accident Victims | |
| Achromatopsia | |
| Achromatopsia Network | |
| Acid Maltase Deficiency (Pompe Disease) | |
| Acid Maltase Deficiency Association (AMDA) | |
| Acid Maltase Deficiency Association (AMDA) - Acid Maltase Deficiency (Pompe Disease) | |
| Acidemia | |
| ACME (Association for Couples in Marriage Enrichment) | |
| ACME (Association for Couples in Marriage Enrichment) - Marriage / Family | |
| Acne Scars | |
| Acne Support Group in Cyberspace | |
| Acne Support Group in Cyberspace - Acne Scars | |
| Acoustic Neuroma Association | |
| Acoustic Neuroma Association - Brain Injury / Brain Tumor / Coma | |
| Action on Pre-Eclampsia | |
AD | |
| ADA Technical Assistance Line | Top |
| ADA Technical Assistance Line - Disability Helpline | |
| ADD Forums | |
| ADD Forums - Learning Disability / Attention Deficit Disorder | |
| ADDA (Attention Deficit Disorder Association) | |
| ADDA (Attention Deficit Disorder Association) - Learning Disability / Attention Deficit Disorder | |
| Addiction and the Family | |
| Addiction and the Family - Drug Abuse Helpline | |
| Addictions | |
| Addison's/Adrenal Disease | |
| Adoption | |
| Adoption / Foster Care Helpline | |
| Adoption Crossroads | |
| Adoption Crossroads - Adoption | |
| Adrenaline Addiction | |
| Adrenaline Addicts Anonymous | |
| Adult Children of Alcoholics World Services Organization | |
| Adult Children of Alcoholics World Services Organization - Alcohol Abuse | |
| Adult Children of Multiplicity | |
| Adult Children of Multiplicity - Families of Mentally Ill | |
| Adult Children of Narcissists | |
| Adult Children of Narcissists - Families of Mentally Ill | |
| Adult Congenital Heart Association | |
| Adult Congenital Heart Association - Heart Disease | |
| Adult Growth Hormone Deficiency | |
| Adult Growth Hormone Deficiency - Short / Tall | Top |
| Adult Survivors of Child Abuse | |
| Adult Survivors of Child Abuse | |
| Adult Survivors of Child Abuse - Child Abuse (Physical / Emotional) | |
| Adult Survivors of Child Abuse - Sexual Abuse / Incest / Rape | |
| Adults with AMC | |
| Adults with AMC - Arthrogryposis | |
AF | |
| After the Affair | |
| After the Affair - Marriage / Family | |
| Aftermath of War: Coping with PTSD Support Group | |
| Aftermath of War: Coping with PTSD Support Group - Veterans / Military | |
AG | |
| AGAST | |
| AGAST - Death of a Child / Fetal Loss | |
| Agenesis of the Corpus Callosum | |
| Aging / Older Persons | |
| Aging / Senior Citizens Helpline | |
AI | |
| Aicardi Syndrome / Infantile Spasms | |
| Aicardi Syndrome Newsletter, Inc. | |
| Aicardi Syndrome Newsletter, Inc. - Aicardi Syndrome / Infantile Spasms | |
| AIDS | |
| AIDS Helpline | |
| AIDS Information | |
| AIDS Information - AIDS Helpline | |
| Air Ambulance Central | |
| Air Ambulance Central - Transportation Helpline | |
| Air Charity Network | Top |
| Air Charity Network - Transportation Helpline | |
| AISSG-USA (Androgen Insensitivity Syndrome Support Group) | |
| AISSG-USA (Androgen Insensitivity Syndrome Support Group) - Androgen Insensitivity | |
AL | |
| Al-Anon Family Groups, Inc. World Services Headquarters | |
| Al-Anon Family Groups, Inc. World Services Headquarters - Alcohol Abuse | |
| Alagille Syndrome | |
| Alagille Syndrome Alliance | |
| Alagille Syndrome Alliance - Alagille Syndrome | |
| Alateen | |
| Alateen - Alcohol Abuse | |
| Albinism | |
| Alcohol Abuse | |
| Alcohol Helpline | |
| Alcoholics Anonymous World Services, Inc. | |
| Alcoholics Anonymous World Services, Inc. - Alcohol Abuse | |
| Alcoholics Victorious | |
| Alcoholics Victorious | |
| Alcoholics Victorious - Alcohol Abuse | |
| Alcoholics Victorious - Drug Abuse | |
| Alexander Graham Bell Association for Deaf and Hard of Hearing | |
| Alexander Graham Bell Association for Deaf and Hard of Hearing - Deaf / Hearing Impaired / Tinnitus | |
| Alive Alone, Inc. | |
| Alive Alone, Inc. - Death of a Child / Fetal Loss | |
| Allergy | |
| Allergy and Asthma Network - Mothers of Asthmatics | Top |
| Allergy and Asthma Network - Mothers of Asthmatics - Lung Disease Helpline | |
| Alliance for Aging Research | |
| Alliance for Aging Research - Aging / Senior Citizens Helpline | |
| ALMA Society (Adoptees' Liberty Movement Association) | |
| ALMA Society (Adoptees' Liberty Movement Association) - Adoption | |
| Alopecia Areata | |
| Alopecia Areata Helpline | |
| Alpha 1 Association | |
| Alpha 1 Association - Respiratory Disease / Emphysema | |
| ALS (Lou Gehrig's Disease) | |
| Alstrom Syndrome International | |
| Alstrom Syndrome International - Alstrom's Syndrome | |
| Alstrom's Syndrome | |
| Alveolar Capillary Dysplasia | |
| Alveolar Capillary Dysplasia Association | |
| Alveolar Capillary Dysplasia Association - Alveolar Capillary Dysplasia | |
| Alzheimer's Association | |
| Alzheimer's Association - Alzheimer's Disease/Dementia | |
| Alzheimer's Disease Education and Referral Center | |
| Alzheimer's Disease Education and Referral Center - Alzheimer's Helpline | |
| Alzheimer's Disease/Dementia | |
| Alzheimer's Helpline | |
AM | |
| AMC Cancer Information and Counseling Line | |
| AMC Cancer Information and Counseling Line - Cancer Helpline | |
| AMCSupport | Top |
| AMCSupport - Arthrogryposis | |
| AMEND (Aiding Mothers and Fathers Experiencing Neonatal Death) | |
| AMEND (Aiding Mothers and Fathers Experiencing Neonatal Death) - Death of a Child / Fetal Loss | |
| American Amputee Foundation, Inc. | |
| American Amputee Foundation, Inc. - Amputation / Limb Deficiency | |
| American Association of Kidney Patients | |
| American Association of Kidney Patients - Kidney Disease | |
| American Association of Suicidology | |
| American Association of Suicidology - Suicide Survivors | |
| American Association on Intellectual and Development Disabilities | |
| American Association on Intellectual and Development Disabilities - Mental Retardation Helpline | |
| American Autoimmune Related Diseases Association, Inc. | |
| American Autoimmune Related Diseases Association, Inc. - Autoimmune Disorders | |
| American Behcet's Disease Association | |
| American Behcet's Disease Association - Behcet's Syndrome | |
| American Brain Tumor Association | |
| American Brain Tumor Association - Brain Injury / Brain Tumor / Coma | |
| American Cancer Society | |
| American Cancer Society - Cancer Helpline | |
| American Celiac Society / Dietary Support Coalition | |
| American Celiac Society / Dietary Support Coalition | |
| American Celiac Society / Dietary Support Coalition - Celiac Sprue | |
| American Celiac Society / Dietary Support Coalition - Inflammatory Bowel Disease/Irritable Bowel Syn | |
| American Chronic Pain Association, Inc. | |
| American Chronic Pain Association, Inc. - Pain, Chronic | Top |
| American Council of the Blind | |
| American Council of the Blind - Blind / Visually Impaired | |
| American Diabetes Association | |
| American Diabetes Association - Diabetes | |
| American Foundation for Suicide Prevention | |
| American Foundation for Suicide Prevention - Suicide Survivors | |
| American Foundation for the Blind | |
| American Foundation for the Blind - Blind Helpline | |
| American Health Assistance Foundation | |
| American Health Assistance Foundation | |
| American Health Assistance Foundation | |
| American Health Assistance Foundation - Alzheimer's Helpline | |
| American Health Assistance Foundation - Blind Helpline | |
| American Health Assistance Foundation - Heart Helpline | |
| American Heart Association | |
| American Heart Association - Heart Helpline | |
| American Humane Association | |
| American Humane Association - Child Abuse Helpline | |
| American Hyperlexia Association | |
| American Juvenile Arthritis Organization | |
| American Juvenile Arthritis Organization - Arthritis | |
| American Kidney Fund | |
| American Kidney Fund - Kidney Disease Helpline | |
| American Leprosy Missions | |
| American Leprosy Missions - Leprosy Helpline | Top |
| American Liver Foundation | |
| American Liver Foundation - Liver Disease | |
| American Lung Association | |
| American Lung Association - Respiratory Disease / Emphysema | |
| American Medical Rehabilitation Providers Association | |
| American Medical Rehabilitation Providers Association - Rehabilitation Helpline | |
| American Nystagmus Network | |
| American Nystagmus Network - Nystagmus | |
| American Parkinson Disease Association, Inc. | |
| American Parkinson Disease Association, Inc. - Parkinson's Disease | |
| American Porphyria Foundation | |
| American Porphyria Foundation - Porphyria | |
| American Public Information on Environment | |
| American Public Information on Environment - Environmental Helpline | |
| American Red Cross | |
| American Red Cross | |
| American Red Cross - Transportation Helpline | |
| American Red Cross - Trauma Helpline | |
| American Self-Help Clearinghouse - CLEARINGHOUSES | |
| American SIDS Institute | |
| American SIDS Institute - Sudden Infant Death Helpline | |
| American Social Health Association | |
| American Social Health Association | |
| American Social Health Association - AIDS Helpline | |
| American Social Health Association - Sexually Transmitted Disease Helpline | Top |
| American Society for Deaf Children | |
| American Society for Deaf Children - Deaf / Hearing Impaired / Tinnitus / Meniere's | |
| American Society of Plastic Surgeons | |
| American Society of Plastic Surgeons - Surgery Helpline | |
| American Stroke Association, Division of American Heart Association | |
| American Stroke Association, Division of American Heart Association - Stroke | |
| American Syringomyelia Alliance Project | |
| American Syringomyelia Alliance Project - Syringomyelia | |
| American Tinnitus Association | |
| American Tinnitus Association - Deaf / Hearing Impaired / Tinnitus / Meniere's | |
| American Trauma Society | |
| American Trauma Society - Trauma Helpline | |
| American Urological Association Foundation | |
| American Urological Association Foundation - Urologic Disease Helpline | |
| American Vitiligo Research Foundation | |
| American Vitiligo Research Foundation - Vitiligo | |
| AmeriFace | |
| AmeriFace - Facial Disfigurement | |
| AMP-L Amputee List | |
| AMP-L Amputee List - Amputation / Limb Deficiency | |
| Amputation / Limb Deficiency | |
| Amputee Coalition of America | |
| Amputee Coalition of America - Amputation / Limb Deficiency | |
| AmVets | |
| AmVets - Charity / Service Organization Helpline | Top |
| Amyloidosis | |
| Amyloidosis Network International | |
| Amyloidosis Network International - Amyloidosis | |
| Amyloidosis Support Groups, Inc. | |
| Amyloidosis Support Groups, Inc. - Amyloidosis | |
AN | |
| Anderson Network | |
| Anderson Network - Cancer Helpline | |
| Androgen Insensitivity | |
| Anemia | |
| Anencephaly | |
| Anencephaly Support Foundation | |
| Anencephaly Support Foundation - Anencephaly | |
| Anesthetists in Recovery | |
| Anesthetists in Recovery | |
| Anesthetists in Recovery - Addictions | |
| Anesthetists in Recovery - Alcohol Abuse | |
| Anesthetists in Recovery - Drug Abuse | |
| Angelman Syndrome | |
| Angelman Syndrome Foundation, Inc. | |
| Angelman Syndrome Foundation, Inc. - Angelman Syndrome | |
| Angels of Addiction | |
| Angels of Addiction - Death of a Child / Fetal Loss | |
| Angioma Alliance | |
| Angioma Alliance - Cavernous Angioma | |
| Aniridia Foundation International | Top |
| Aniridia Foundation International | |
| Aniridia Foundation International - Blind / Visually Impaired | |
| Aniridia Foundation International - Stevens Johnson Syndrome | |
| Ankylosing Spondylitis | |
| Anorchidism | |
| Anorchidism Support Group | |
| Anorchidism Support Group - Anorchidism | |
| Anorectal malformations | |
| Anosmia | |
| Anosmia - Anosmia / Parosmia | |
| Anosmia / Parosmia | |
| Antiepileptic Drug Pregnancy Registry | |
| Antiepileptic Drug Pregnancy Registry - Pregnancy / Childbirth Helpline | |
| Anxiety Disorders Association of America | |
| Anxiety Disorders Association of America - Obsessive-Compulsive Disorder | |
AP | |
| Apert Syndrome | |
| Apert Syndrome Pen Pals | |
| Apert Syndrome Pen Pals - Apert Syndrome | |
| Aphasia | |
| Aplastic Anemia and MDS International Foundation, Inc. | |
| Aplastic Anemia and MDS International Foundation, Inc. - Anemia | |
| Apnea, sleep | |
| Apraxia | |
| Apraxia-Kids | |
| Apraxia-Kids - Apraxia | Top |
AR | |
| Arachnoiditis | |
| ARMS (Association for Repetitive Motion Syndromes) | |
| Army Wounded Soldier and Family Hotline | |
| Army Wounded Soldier and Family Hotline - Military / Veterans Helpline | |
| Arnold-Chiari Malformation | |
| Arrhythmia Alliance (The Heart Rhythm Charity) | |
| Arrhythmia Alliance (The Heart Rhythm Charity) - Heart Disease | |
| Arthritis | |
| Arthritis Foundation | |
| Arthritis Foundation - Arthritis | |
| Arthrogryposis | |
| Arthrogryposis Support Group | |
| Arthrogryposis Support Group - Arthrogryposis | |
| Artistic Creativity | |
| ARTS Anonymous (Artists Recovering Through the Twelve Steps) | |
| ARTS Anonymous (Artists Recovering Through the Twelve Steps) - Artistic Creativity | |
AS | |
| ASA Kids | |
| ASA Kids - Urea Cycle Disorders | |
| ASHA Hearing and Speech Helpline | |
| ASHA Hearing and Speech Helpline - Deaf Helpline | |
| ASHA's STI Resource Center | |
| ASHA's STI Resource Center - Herpes / Sexually Transmitted Diseases | |
| Asherman's Syndrome Online Community | |
| Asherman's Syndrome Online Community - Ashermans Syndrome | |
| Ashermans Syndrome | Top |
| Association for Children for Enforcement of Support (ACES) | |
| Association for Children for Enforcement of Support (ACES) - Separation / Divorce | |
| Association For Glycogen Storage Disease | |
| Association For Glycogen Storage Disease - Glycogen Storage Disease | |
| Association for Macular Diseases, Inc. | |
| Association for Macular Diseases, Inc. - Blind / Visually Impaired | |
| Association for the Bladder Exstrophy Community | |
| Association for the Bladder Exstrophy Community - Bladder Exstrophy | |
| Association of Gastrointestinal Motility Disorders, Inc. | |
| Association of Gastrointestinal Motility Disorders, Inc. | |
| Association of Gastrointestinal Motility Disorders, Inc. - Motility Disorders | |
| Association of Gastrointestinal Motility Disorders, Inc. - Pseudo-obstruction | |
| Asthma and Allergy Foundation of America | |
| Asthma and Allergy Foundation of America | |
| Asthma and Allergy Foundation of America - Allergy | |
| Asthma and Allergy Foundation of America - Respiratory Disease / Emphysema | |
AT | |
| Ataxia | |
| Atresia-Microtia Group | |
| Atresia-Microtia Group - Ear Anomalies | |
| Attachment and Trauma Network | |
| Attachment and Trauma Network - Families of Mentally Ill | |
| Attachment Disorder Support Group | |
| Attachment Disorder Support Group - Families of Mentally Ill | |
| Attachment Parenting International | |
| Attachment Parenting International - Parenting / Grandparenting | Top |
| Attorney Helpline | |
AU | |
| Autism / Asperger Syndrome | |
| Autism Network International | |
| Autism Network International - Autism / Asperger Syndrome | |
| Autism Society of America | |
| Autism Society of America - Autism / Asperger Syndrome | |
| Autoimmune Disorders | |
| Autoimmune Liver Disease Support Group | |
| Autoimmune Liver Disease Support Group - Liver Disease | |
