- Achilles Tendinitis
- achondroplasia
- Achromatopsia
- Acid Maltase Deficiency
- Acne
- Acoustic Neuroma
- Adenomyosis
- Adrenoleukodystrophy
- Agenesis of the Corpus Callosum
- Agoraphobia
- Aicardi Syndrome
- Albinism
- Alcohol Poisoning
- Alcoholism
- Alien Hand Syndrome
- Alopecia Areata
- Alpha-1 Antitrypsin Deficiency
- Altitude Illness
- Alveolar Capillary Dysplasia
- Amblyopia
- Amebiasis
- Amenorrhea
- Amnesia
- Amul MasterChef India
- Amyloidosis
- Anal Cancer
- Anal Fissure
- Anaphylactic Shock
- Anascara/adema
- Androgen Insensitivity Syndrome
- Anencephaly
- Aneurysm
- Angelman Syndrome
- Angina Pectoris
- Ankylosing Spondylitis
- Anorexia Nervosa
- anosmia
- Anterior Cruciate Ligament Injuries
- Anthrax
- Antiphospholipid Syndrome
- Antisocial Personality Disorder
- Apert Syndrome
- Aphasia
- Aplastic Anemia
- Appendicitis
- Arachnoiditis
- Argyria
- Arnold-Chiari Malformation
- Arrhythmogenic Right Ventricular Dysplasia
- Arteriovenous Fistula
- Arthritis
- Asbestosis
- Asperger Syndrome
- Asthma
- Ataxia
- Atresia
- Atrial Fibrillation
- Attention Deficit Disorder
- Autism
- Autoimmune Disease
- Aviophobia
- Avoidant Personality Disorder
- Back Pain
- Bacterial Vaginosis
- Balika Vadhu
- Barth Syndrome
- Batten Disease
- Bedsores
- Benign Paroxysmal Positional Vertigo
- Benign Prostatic Hyperplasia
- beriberi
- Big Money
- Bipolar Disorder
- Bird flu
- Black Lung
- Bladder Cancer
- Blepharospasm
- Blindness
- Blue Rubber Bleb Nevus Syndrome
- Body Dysmorphic Disorder
- Bone Cancer
- Borderline Personality Disorder
- Botulism
- Bowel Incontinence
- Brachial Plexus Injury
- Brain Injury
- Brain Tumors
- Breast Cancer
- Bronchiolitis
- Bronchitis