| AA | Academy of Aphasia | In English | → Academies |
| AAA | Alzheimer Angehörige Austria | In German | → Organizations and associations → Neurology |
| AAA | Association Alopecia Areata | In French | → Associations |
| AAAP | American Academy of Addiction Psychiatry | In English | → Academies → Psychiatry |
| AABA | American Anorexia Bulimia Association | In English | → Associations |
| AABIC | Association for the Advancement of Brain Injured Children | In English | → Associations → Neurology → Pediatry |
| AAC | AIDS Action Council | In English | → Organizations and associations → Infectious diseases |
| AACAP | American Academy of Child and Adolescent Psychiatry | In German | → Academies → Child psychology → Neurology |
| AACD | American Academy of Craniomandibular Disorders | In English | → Academies |
| AACDP | American Association of Chairs of Departments of Psychiatry | In English | → Associations → Psychiatry |
| AACE | American Association for Cancer Education | In English | → Associations → Education → Oncology |
| AACMHP | American Association of Community Mental Health Center Psychiatrists | In English | → Associations → Psychiatry |
| AACN | American Academy of Clinical Neuropsychology | In English | → Academies → Psychology → Neurology |
| AACP | American Association of Community Psychiatrists | In English | → Associations → Psychiatry |
| AACP | American Academy of Cardiovascular Perfusion | In English | → Academies → Blood and circulatory system → Cardiology |
| AACP | American Academy of Clinical Psychiatrists | In English | → Academies → Psychiatry |
| AACP | American Academy for Child Psychoanalysts | In English | → Academies → 616891 |
| AACP | American College of Chest Physicians (www.chestnet.org) | In English | → Organizations and associations → Chest diseases |
| AACPI | American Alliance of Cancer Pain Initiatives | In English | → Organizations and associations → Oncology |
| AACR | American Association for Cancer Research | In English | → Associations → Oncology |
| AACU | American Association of Clinical Urologists | In English | → Associations → Urology |
| AACVPR | American Association of Cardiovascular and Pulmonary Rehabilitation | In English | → Associations → Cardiology → Chest diseases |
| AAD | American Academy of Dermatology | In English | → Academies → Dermatology |
| AADPRT | American Association of Directors of Psychiatric Residency Training | In English | → Associations → Education → Psychiatry |
| AAEM | American Association of Electrodiagnostic Medicine | In English | → Organizations and associations → Diagnostics → Medicine |
| AAG | Alopécie androgénique | In French | |
| AAGHP | American Association of General Hospital Psychiatrists | In English | → Associations → Psychiatry |
| AAGP | American Association for Geriatric Psychiatry | In English | → Associations → Psychiatry → Gerontology |
| AAIMHI | Australian Association of Infant Mental Health | In English | → Associations → Psychiatry |
| AAMR | American Association on Mental Retardation | In English | → Associations → Neurology |
| AAMSH | American Academy of Male Sexual Health | In English | → Academies → Sexual problems → Urology |
| AAN | American Academy of Neurology | In English | → Academies → Neurology |
| AANN | American Association of Neuroscience Nurses | In English | → Associations → Neurology |
| AANP | American Association of Neuropathologists | In English | → Associations → Neurology |
| AANP | American Association of Naturopathic Physicians | In English | → Associations → Neurology |
| AANS | American Association of Neurological Surgeons | In English | → Associations → Neurology → Surgery, orthopaedics, ophthalmology |
| AAOMP | American Academy of Oral and Maxillofacial Pathology | In English | → Academies |
| AAP | Association of Academic Physiatrists | In English | → Associations → Psychiatry |
| AAP | Association for Academic Psychiatry | In English | → Associations → Psychiatry |
| AAPA | American Association of Psychiatric Administrators | In English | → Associations → Management → Psychiatry |
| AAPAA | American Association of Psychiatrists in Alcoholism and Addictions | In English | → Associations → Psychiatry |
| AAPL | American Academy of Psychiatry and the Law | In English | → Academies → Law, jurisprudence → Psychiatry |
| AAPSA | American Academy of Psychoanalysis | In English | → Academies → Psychology → Neurology |
| AAPSC | American Association of Psychiatric Services for Children | In English | → Associations → Psychiatry → Pediatry |
| AARC | American Association for Respiratory Care | In English | → Associations |
| AARDA | American Autoimmune Related Diseases Association | In English | → Associations |
| AART | American Association for Respiratory Therapy | In English | → Associations → Chest diseases |
| AAS | American Association of Suicidology | In English | → Associations → Psychiatry |
| AASCIPSW | American Association of Spinal Cord Injury Psychologists and Social Workers | In English | → Associations → Neurology → Traumatology |
| AASH | American Association for the Study of Headache | In English | → Associations → Neurology |
| AASP | American Association for Social Psychiatry | In English | → Associations → Sociology → Psychiatry |
| AATS | American Association for Thoracic Surgery | In English | → Associations → Chest diseases → Surgery, orthopaedics, ophthalmology |
| AAVDI | Australasian Association of Veterinary Diagnostic Imaging | In English | → Associations → Diagnostics → Veterinary medicine |
| AAVLD | American Association of Veterinary Laboratory Diagnosticians | In English | → Associations → Diagnostics → Veterinary medicine |
| AAWR | American Association for Women Radiologists | In English | → Associations → 616073 |
| ABC | Association of Black Cardiologists | In English | → Associations → Cardiology |
| ABCN | American Board of Clinical Neuropsychology | In English | → Organizations and associations → Psychology → Neurology |
| ABCSG | Austrian Breast & Colorectal Cancer Study Group | In English | → Organizations and associations → Chest diseases → Oncology |
| ABD | Arbeitsgemeinschaft für Berufs- und Umweltdermatologie | In German | → Associations → Dermatology |
| ABD | American Board of Dermatology | In English | → Organizations and associations → Dermatology |
| ABE | Associação Brasileira de Epilepsia (www.epilepsiabrasil.org.br) | In Portuguese | → Associations → Neurology |
| ABEA | American Broncho-Esophagological Association | In English | → Chest diseases → 6163 |
| ABFP | American Board of Forensic Psychiatry | In English | → Psychiatry |
| ABI | Adaptive Brain Interfaces | In English | → Human-computer interaction → Neurology |
| ABI | Acquired Brain Injury | In English | → Neurology |
| ABLES | Adult Blood Lead Epidemiology and Surveillance | In English | → Blood and circulatory system → Infectious diseases |
| ABNA | Anorexia Bulimia Nervosa Association | In English | → Associations |
| ABNFV | Anorexia & Bulimia Nervosa Foundation of Victoria | In English | → Foundations |
| ABNN | American Board of Neuroscience Nursing | In English | → Organizations and associations → Neurology |
| ABNS | American Board of Neurological Surgery | In English | → Organizations and associations → Neurology → Traumatology |
| ABOMBI | American Board of Minor Brain Injury | In English | → Organizations and associations → Neurology |
| ABP | American Board of Pathology | In English | → Organizations and associations |
| ABPN | American Board of Psychiatry and Neurology | In English | → Organizations and associations → Neurology → Psychiatry |
| ABPNS | American Board of Pediatric Neurological Surgery | In English | → Organizations and associations → Surgery, orthopaedics, ophthalmology → Neurology → Pediatry |
| ABPP | American Board of Professional Psychology | In English | → Organizations and associations → Psychology → Neurology |
| ABTA | American Brain Tumor Association | In English | → Associations → Neurology → Oncology |
| ABTP | American Board of Transcultural Psychiatry | In English | → Organizations and associations → Psychiatry |
| ACAMH | Association Child and Adolescent Mental Health | In English | → Associations → Child psychology → Neurology |
| ACC | Association sur les cavernomes cérébraux | In French | → Associations → Neurology |
| ACCP | Alliance for Cervical Cancer Prevention | In English | → Organizations and associations → Oncology |
| ACE | Angiotensin Converting Enzyme | In English | → Enzymes → Cardiology |
| ACJ | Arthrite Chronique Juvénile | In French | → 6167 |
| ACNP | American College of Neuropsychopharmacology | In English | → Pharmacology, toxicology → Neurology |
| ACO | Arbeitsgemeinschaft für Chirurgische Onkologie | In German | → Associations → Oncology → Surgery, orthopaedics, ophthalmology |
| ACP | Arbeitsgemeinschaft für Coloproctologie | In German | → Associations |
| ACR | American College of Radiology (www.acr.org) | In English | → Organizations and associations → Diagnostics |
| ACRI | Atlantic Cancer Research Institute | In English | → Oncology |
| ACT | Adaptive Control of Thought | In English | → Psychology → Neurology |
| AD | Alzheimer's Disease | In English | → Neurology |
| ADA | American Diabetes Association | In English | → Associations |
| AdCP | Advances in Cardiovascular Physics | In English | → Serial publications, periodicals → Cardiology |
| ADD | Attention Deficit Disorder | In English | → Neurology |
| ADHD | Attention Deficit Hyperactivity Disorder | In English | → Psychology → Neurology |
| ADHD | Attention Deficit / Hyperactivity Disorder = TDAH | Trouble Déficit de l’Attention / Hyperactivité | In French |
In English | → Neurology |
| ADHD | Attention-Deficit/Hyperactivity Disorder | In English | → Neurology |
| AEP | Association of European Psychiatrists | In English | → Associations → Psychiatry |
| AERIO | Association d'Enseignement et de Recherche des Internes en Oncologie | In French | → Associations → Education → Oncology |
| AES | American Epilepsy Society (www.aesnet.org) | In English | → Organizations and associations → Neurology |
| AFA | Arbeitsgemeinschaft für Atempflege | In German | → Associations → Dermatology |
| AFA | Association François Aupetit | In French | → Associations |
| AFH | Association Française des Hémophiles | In French | → Associations → Blood and circulatory system |
| AFM | Association Française contre les Myopathies | In French | → Associations |
| AFU | Association Française d'Urologie | In French | → Associations → Urology |
| AGF | Alopécie androgénique féminine | In French | |
| AGH | Alopécie androgénique masculine | In French | |
| AGNP | Arbeitsgemeinschaft für Neuropsychopharmakologie und Pharmakopsychiatrie | In German | → Associations → Pharmacology, toxicology → Neurology → Medicine |
| AGO | Arbeitsgemeinschaft für Gynäkologische Onkologie | In German | → Associations → Oncology → Gynaecology |
| AGS | Adrenogenitales Syndrom | In German | → Physiology |
| aHUS | Atypical Hemolytic Uremic Syndrome | In English | → Blood and circulatory system |
| AIDS | Akirita Imuno-Deficita Simptomaro = AIDS | Acquired Immune Deficiency Syndrome | In English = SIDA | Syndrome d'Immuno-Déficience Acquise | In French = VIGS | Verworwe Immuniteitsgebreksindroom | In Afrikaans = SIDA | Síndrome de Inmuno-Deficiencia Adquirida | In Occitan = SIDA | Sindromo di Imuno-Defekteso Aquirita | In Ido = SIDA | Sindrome d'inmunodefizienzia aquirita | In Aragonese = СПИН | Синдром на придобитата имунна недостатъчност | In Bulgarian = QİÇS | Qazanılmış İmmun Çatışmazlığı Sindromu | In Azerbaijani = SIDA | Síndrome d'Immunodeficiència Adquirida | In Catalan = HIES | Hartutako Immuno Eskasiaren Sindromea | In Basque = SIDA | Síndrome de Inmunodeficiencia Adquirida | In Spanish = SEIF | Siondróm Easpa Imdhíonachta Faighte | In Irish = AIDS | Annlochd Inneamh Dìon-Slàinte | GD = ՁԻԱՀ | Ձեռքբերովի Իմունային Անբավարվածության Համախտանիշ | In Armenian = SCDI | Syndromis Comparatis Defectu Immunitatis | In Latin = 에이즈 | 후천성 면역 결핍 증후군 | In Korean = შიდსი | შეძენილი იმუნური დეფიციტის სინდრომი | In Georgian = СИДА | Синдромот на стекнат имунолошки дефицит | In Macedonian = СИДА | синдром стеченог имунолошког дефицита | In Serbian = AIDS | Akvirírani imúnski deficítni sindróm | In Slovenian = СПИД | Синдром приобретённого иммунного дефицита | In Russian = SIDA | Sindromul Imunodeficienţei Autodobândite | In Romanian = UHCW | Unquy hark'aypa chaskisqa waqlliynin | In Quechua = SIDA | Síndrome da imunodeficiência adquirida | In Portuguese = AIDS | Hội chứng Suy giảm Miễn dịch Mắc phải | In Vietnamese = СНІД | Cиндром набутого імунодефіциту | In Ukrainian = AIDS | Alınğan İmmun Defisit Síndromı | In Tatar = UKIMWI | Upungufu wa Kinga Mwilini | In Swahili |
In Esperanto | → Immunology and allergy → Infectious diseases |
| AIDS | Acquired Immune Deficiency Syndrome = SIDA, VIGS, СПИН, QİÇS, HIES, SEIF, ՁԻԱՀ, SCDI, 에이즈, შიდსი, СИДА, СПИД, UHCW, СНІД, UKIMWI (look above) |
In English | → Immunology and allergy → Infectious diseases |
| AIDS | Alınğan İmmun Defisit Síndromı = SIDA, VIGS, СПИН, QİÇS, HIES, SEIF, ՁԻԱՀ, SCDI, 에이즈, შიდსი, СИДА, СПИД, UHCW, СНІД, UKIMWI (look above) |
In Tatar | → Immunology and allergy → Infectious diseases |
| AIDS | Annlochd Inneamh Dìon-Slàinte = SIDA, VIGS, СПИН, QİÇS, HIES, SEIF, ՁԻԱՀ, SCDI, 에이즈, შიდსი, СИДА, СПИД, UHCW, СНІД, UKIMWI (look above) |
[GD] | → Immunology and allergy → Infectious diseases |
| AIDS | Hội chứng Suy giảm Miễn dịch Mắc phải = SIDA, VIGS, СПИН, QİÇS, HIES, SEIF, ՁԻԱՀ, SCDI, 에이즈, შიდსი, СИДА, СПИД, UHCW, СНІД, UKIMWI (look above) |
In Vietnamese | → Immunology and allergy → Infectious diseases |
| AIDS | Akvirírani imúnski deficítni sindróm = SIDA, VIGS, СПИН, QİÇS, HIES, SEIF, ՁԻԱՀ, SCDI, 에이즈, შიდსი, СИДА, СПИД, UHCW, СНІД, UKIMWI (look above) |
In Slovenian | → Immunology and allergy → Infectious diseases |
| AIF | Apoptosis Inhibitor Factor | In English | → Biochemistry, biophysics → Oncology |
| AILS | Associazione Italiana Lotta alla Sclerodermia | In Italian | → Associations → Dermatology |
| AIMH | Association for Infant Mental Health | In English | → Associations → Psychiatry |
| AISPACE | Agir, Informer, Sensibiliser le Public Pour Améliorer la Connaissance des Épilepsies | In French | → Organizations and associations → Neurology |
| AJD | Aide aux Jeunes Diabétiques | In French | → Physiology |
| ALD | Adrenoleukodystrophie | In German | |
| ALFEDIAM | Association de Langue Française pour l'Étude du Diabète et des Maladies Métaboliques (www.alfediam.org) | In French | → Associations → Physiology |
| ALS | Amyotrophe Lateralsklerose = ALS | Amyotrophic Lateral Sclerosis | In English |
In German | |
| ALS | Amyotrophic Lateral Sclerosis = (look above) |
In English | |
| ALSA | Amyotrophic Lateral Sclerosis Association (www.alsa.org) | In English | → Associations |
| AMET | Asociación Mexicana de Esclerosis Tuberosa | In Spanish | → Associations → Neurology |
| AMF | Association Française contre les Myopathies | In French | → Associations |
| AmJC | American Journal of Cardiology | In English | → Serial publications, periodicals → Cardiology |
| AMPQ | Association des Médecins Psychiatres du Québec | In French | → Associations → Psychiatry |
| AMSR | Asociaţia pentru Medicina Sexualităţii din România | In Romanian | → Associations → Sexual problems → Urology |
| ANLLF | Association des Neurologues Libéraux de Langue Française | In French | → Associations → Neurology |
| ANOCEF | Association des Neuro-OnCologues d'Expression Française | In French | → Associations → Neurology → Oncology |
| ANRS | Agence Nationale de Recherches sur le SIDA | In French | → Infectious diseases |
| AOMI | Artérite Oblitérante des Membres Inférieurs | In French | → Cardiology |
| APA | American Psychiatric Association (www.psych.org) | In English | → Associations → Psychiatry |
| APF | Association des Paralysés de France | In French | → Organizations and associations |
| APFAPE | Associação Portuguesa de Familiares, Amigos e Pessoas com Epilepsia | In Portuguese | → Associations → Neurology |
| APLS | Antiphospholipid syndrome | In English | → Physiology |
| APOPIS | Abnormal proteins in the pathogenesis of neurodegenerative disorders | In English | → Biochemistry, biophysics → Neurology |
| APS | Antiphospholipid Syndrome | In English | |
| APSIR | Asia Pacific Society for Impotence Research | In English | → Organizations and associations → Sexual problems → Urology |
| ARC | Association pour la Recherche sur le Cancer | In French | → Associations → Oncology |
| ARD | Association pour la Recherche sur le Diabète (www.a-rd.fr) | In French | → Associations → Physiology |
| ARDE | Asociaţia Română a Disfuncţiei Erectile | In Romanian | → Associations → Sexual problems → Urology |
| ARFY | Atherosclerosis Risk-Factors in Female Youngsters | In English | → Blood and circulatory system → Cardiology |
| ARMY | Atherosclerosis Risk-Factors in Male Youngsters | In English | → Blood and circulatory system → Cardiology |
| ASESA | Asociacion Espanola de Andrologia | In Spanish | → Organizations and associations → Sexual problems → Urology |
| ASH | Alkoholische Steatohepatitis | In German | |
| ASRIM | Associazione della Svizzera Romanda e Italiana contro le Miopatie | In Italian | → Associations |
| ASS | Autisme Spectrum Stoornissen | In Dutch | → Neurology |
| ASSM | Austrian Society for Sexual Medicine | In English | → Organizations and associations → Urology → Gynaecology → Psychology |
| ASSO | Austrian Society for Surgical Oncology | In English | → Organizations and associations → Oncology → Surgery, orthopaedics, ophthalmology |
| AST | Associazione Sclerosi Tuberosa | In Italian | → Associations → Neurology |
| ASTB | Association Sclérose Tubéreuse de Bourneville | In French | → Associations → Neurology |
| ATNC | Agent Transmissible Non Conventionnel | In French | → Biochemistry, biophysics → Infectious diseases |
| ATSS | Australasian Tuberous Sclerosis Society | In English | → Organizations and associations → Neurology |
| AUA | American Urological Association | In English | → Associations → Urology |
| AVC | Accident Vasculaire Cérébral | In French | → Cardiology → Neurology |
| BDU | Berufsverband der Deutschen Urologen | In German | → Organizations and associations → Urology |
| BGSP | Berliner Gesellschaft für Soziale Psychiatrie | In German | → Organizations and associations → Psychiatry |
| BJC | British Journal of Cancer | In English | → Oncology |
| BJD | British Journal of Dermatology | In English | → Serial publications, periodicals → Dermatology |
| BJU | British Journal of Urology | In English | → Serial publications, periodicals → Urology |
| BNDF | Brain-derived neurotrophic factor | In English | → Hormones → Neurology |
| BPCO | Broncho-Pneumopathie Chronique Obstructive | In French | → Chest diseases |
| BPH | Benigne Prostata-Hyperplasie | In German | |
| BSCS | Budapest Semester in Cognitive Science | In English | → Higher education, universities → Psychology → Neurology |
| BSSM | British Society for Sexual Medicine | In English | → Organizations and associations → Sexual problems → Urology → Applied sciences, technology |
| BvU | Berufsverband der österreichischen Urologen | In German | → Organizations and associations → Urology |
| CA | Cancer Antigen | In English | → Biochemistry, biophysics → Oncology |
| CAD | Computer-Aided Detection | In English | → Diagnostics → Computer-based techniques |
| CAN | Canadian Arthritis Network (www.arthritisnetwork.ca) | In English | → Organizations and associations |
| CAPS | Catastrophic Antiphospholipid Syndrome | In English | → Physiology |
| CCAIMT | Common Carotid Artery Intima Media Thickness (www.rsna.org) | In English | → Blood and circulatory system → Cardiology |
| CDT | Centro de Diagnóstico y Tratamiento | In Spanish | → Diagnostics → Medicine |
| CEA | Carcino-Embryonales Antigen | In German | → Biological sciences → Oncology |
| CECOG | Central European Cooperative Oncology Group | In English | → Oncology |
| CED | Chronisch-entzündliche Darmerkrankung | In German | |
| CEREDIH | CEntre de REférence des Déficits Immunitaires Héréditaires | In French | |
| CGFL | Centre Georges-François Leclerc | In French | → Oncology |
| CHADD | Children and Adults with Attention Deficit/Hyperactivity Disorder | In English | → Psychology → Psychiatry |
| CHARMS | Canadian Hemophilia Assessment and Resource Management Information System | In English | → Knowledge management → Blood and circulatory system |
| CHAVI | Center for HIV-AIDS Vaccine Immunology | In English | → Research institutes → Immunology and allergy → Infectious diseases |
| CHB | Centre Hépato-Biliaire | In French | → 6163 |
| CHC | Carcinome hépatocellulaire | In French | → Oncology |
| CINP | Collegium Internationale Neuro-Psychopharmacologicum | In Latin | → Pharmacology, toxicology → Neurology |
| CIRSE | Cardiovascular and Interventional Radiological Society of Europe | In English | → Cardiology |
| CIS | Centre d'Information sur la Surdité | In French | → Libraries |
| CISMA | Conférence Internationale sur le Sida et les Maladies sexuellement transmissibles en Afrique | In French | → Organizations and associations → Infectious diseases |
| CJK | Creutzfeldt-Jakob-Krankheit | In German | → Neurology |
| CLCC | Centres de Lutte Contre le Cancer | In French | → Oncology |
| CLIN | Comité de Lutte contre l'Infection Nosocomiale | In French | → Organizations and associations → Infectious diseases |
| CMV | Cytomegalovirus | In German | → Virology |
| CNS | Central Nervous System | In English | → Biological sciences → Anatomy → Neurology |
| CNV | Choroidal Neovascularization | In English | → Ophtalmology |
| CNV | Choroidal Neovascularisation | In English | → Ophtalmology |
| COPD | Chronic Obstructive Pulmonary Disease | In English | → Chest diseases |
| CP | Chronische Polyarthritis | In German | → 6167 |
| CPCSS | Chiang mai Psychiatric Care-giving Skill Scale | In English | → Psychiatry |
| CPCSS | Carolina Prostate Cancer Screening Study | In English | → Oncology |