| | | | | |  | Diseases and Conditions A Abdominal adhesions Abdominal aortic aneurysm Abortion Abscess anal brain peritonsillar Absence seizures Achalasia Achilles tendonitis ACL injuries Acne Acoustic neuroma Acquired immunodeficiency syndrome Acrochordon Actinic keratosis Adenocarcinoma of the lung ADHD Adhesions, abdominal Adult-onset diabetes Aero-otitis Age spots Age-related hearing loss Age-related macular degeneration Age-related vision change (presbyopia) Aging Agoraphobia AIDS Alcohol withdrawal Alcoholism Allergen immunotherapy Allergic reaction, severe Allergic rhinitis Allergies allergy shots contact dermatitis food hives latex medication allergies rhinitis severe allergic reactions Alopecia areata hereditary-patterned traumatic ALS Altitude sickness Alzheimer's disease Amaurotic familial infantile idiocy Amblyopia Amenorrhea Amoebic Dysentery Amyloidosis Amyotrophic lateral sclerosis Anaphylaxis Androgenetic alopecia Anemia aplastic hemolytic pernicious sickle cell Angina Angiomas, spider Angioplasty Ankle fracture sprain Ankylosing spondylitis Anorexia nervosa Anovulatory bleeding Anterior cruciate ligament injuries Antibiotic-associated diarrhea Antiphospholipid antibody syndrome Antisocial personality disorder Anus abscess fissure fistula hemorrhoids itch overview stricture Anxiety disorders generalized obsessive-compulsive disorder panic disorder phobia post-traumatic stress disorder Aortic arch syndrome Aplastic anemia Apnea, sleep Appendicitis Arches, fallen Arm fracture Arrhythmias, cardiac atrial fibrillation bradycardia overview Arteritis, Takayasu's Arthritic diseases ankylosing spondylitis arthritis associated with inflammatory bowel disease gout infectious juvenile osteoarthritis pseudogout psoriatic arthritis Reactive Arthritis rheumatoid Arthroscopic surgery Asbestosis Ascending cholangitis Asteatotic eczema Asthma Astigmatism Asymptomatic bacteriuria Ataxia, Friedreich's Atherosclerosis Athlete's foot Atopic dermatitis Atrial fibrillation Atrophic vaginitis Attention-deficit hyperactivity disorder Autism Autoimmune diseases celiac disease Crohn's disease diabetes mellitus, type 1 (insulin-dependent; juvenile-onset) diabetes mellitus, type 2 (non-insulin-dependent; adult-onset) Graves' disease hyperthyroidism immune thrombocytopenic purpura lupus myasthenia gravis polyarteritis nodosa rheumatoid arthritis scleroderma Takayasu's arteritis ulcerative colitis | | | |