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A – Z Health Conditions

Diseases & Conditions – Easy-to-understand answers about diseases and conditions

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |

  • AAA, see Abdominal aortic aneurysm
  • Abdominal aortic aneurysm
  • Acanthosis nigricans
  • Achalasia
  • Acid and chemical burns
  • Acid reflux in babies, see Reflux in babies
  • Acne
  • Acoustic neuroma (vestibular schwannoma)
  • Acromegaly
  • Actinic keratoses (solar keratoses)
  • Actinomycosis
  • Acute cholecystitis
  • Acute kidney injury
  • Acute lymphoblastic leukaemia
  • Acute myeloid leukaemia
  • Acute pancreatitis
  • Acute respiratory distress syndrome (ARDS)
  • Addison’s disease
  • Adenomyosis
  • ADHD in adults
  • ADHD in children and young people
  • Age-related macular degeneration (AMD)
  • Agoraphobia
  • Albinism
  • Alcohol misuse
  • Alcohol poisoning
  • Alcohol-related liver disease
  • Alkaptonuria
  • Allergic rhinitis
  • Allergies
  • Altitude sickness
  • Alzheimer’s disease
  • Amblyopia, see Lazy eye
  • Amyloidosis
  • Anabolic steroid misuse
  • Anaemia (iron deficiency), see Iron deficiency anaemia
  • Anaemia (vitamin B12 or folate deficiency), see Vitamin B12 or folate deficiency anaemia
  • Anal cancer
  • Anal fissure
  • Anal fistula
  • Anaphylaxis
  • Androgen insensitivity syndrome
  • Aneurysm (abdominal aortic), see Abdominal aortic aneurysm
  • Aneurysm (brain), see Brain aneurysm
  • Angelman syndrome
  • Angina
  • Angioedema
  • Animal and human bites
  • Ankylosing spondylitis
  • Anorexia nervosa
  • Antiphospholipid syndrome (APS)
  • Antisocial personality disorder
  • Anxiety disorders in children
  • Aphasia
  • Appendicitis
  • Arrhythmia, see Heart rhythm problems (arrhythmia)
  • Arthritis
  • Asbestosis
  • Asperger’s, see Autism
  • Aspergillosis
  • Asthma
  • Astigmatism
  • Ataxia
  • Atherosclerosis
  • Athlete’s foot
  • Atopic eczema
  • Atrial fibrillation
  • Auditory processing disorder (APD)
  • Autism
  • Autosomal dominant polycystic kidney disease
  • Autosomal recessive polycystic kidney disease
  • Avian flu, see Bird flu