A to Z
A to Z list of common illnesses and conditions including their symptoms, causes and treatments
A
- Abdominal aortic aneurysm
- Acne
- Acute cholecystitis
- Acute lymphoblastic leukaemia
- Acute lymphoblastic leukaemia: Children
- Acute lymphoblastic leukaemia: Teenagers and young adults
- Acute myeloid leukaemia
- Acute myeloid leukaemia: Children
- Acute myeloid leukaemia: Teenagers and young adults
- Acute pancreatitis
- Addison's disease
- Alcohol-related liver disease
- Allergic rhinitis
- Allergies
- Alzheimer's disease
- Anal cancer
- Anaphylaxis
- Angioedema
- Ankylosing spondylitis
- Anorexia nervosa
- Anxiety
- Anxiety disorders in children
- Appendicitis
- Arthritis
- Asbestosis
- Asthma
- Atopic eczema
- Attention deficit hyperactivity disorder (ADHD)
- Autistic spectrum disorder (ASD)
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B
- Bacterial vaginosis
- Benign prostate enlargement
- Bile duct cancer (cholangiocarcinoma)
- Binge eating
- Bipolar disorder
- Bladder cancer
- Blood poisoning (sepsis)
- Bone cancer
- Bone cancer: Teenagers and young adults
- Bowel cancer
- Bowel incontinence
- Bowel polyps
- Brain stem death
- Brain tumours
- Brain tumours: Children
- Brain tumours: Teenagers and young adults
- Breast cancer (female)
- Breast cancer (male)
- Bronchiectasis
- Bronchitis
- Bulimia
- Bunion
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C
- Carcinoid syndrome and carcinoid tumours
- Catarrh
- Cellulitis
- Cerebral palsy
- Cervical cancer
- Chest infection
- Chest pain
- Chickenpox
- Chilblains
- Chlamydia
- Chronic fatigue syndrome
- Chronic kidney disease
- Chronic lymphocytic leukaemia
- Chronic myeloid leukaemia
- Chronic obstructive pulmonary disease
- Chronic pain
- Chronic pancreatitis
- Cirrhosis
- Clostridium difficile
- Coeliac disease
- Cold sore
- Coma
- Common cold
- Common heart conditions
- Congenital heart disease
- Conjunctivitis
- Constipation
- Coronavirus (COVID-19)
- Cough
- Crohn's disease
- Croup
- Cystic fibrosis
- Cystitis
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D
- Deafblindness
- Deep vein thrombosis
- Dehydration
- Dementia
- Dementia with Lewy bodies
- Dental abscess
- Depression
- Dermatitis herpetiformis
- Diabetes
- Diarrhoea
- Discoid eczema
- Diverticular disease and diverticulitis
- Dizziness (Lightheadedness)
- Down's syndrome
- Dry mouth
- Dysphagia (swallowing problems)
- Dystonia
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E
F
G
H
- Haemorrhoids (piles)
- Hand, foot and mouth disease
- Hay fever
- Head and neck cancer
- Head lice and nits
- Headaches
- Hearing loss
- Heart failure
- Hepatitis A
- Hepatitis B
- Hepatitis C
- Hiatus hernia
- High cholesterol
- HIV
- Hodgkin lymphoma
- Hodgkin lymphoma: Children
- Hodgkin lymphoma: Teenagers and young adults
- Huntington's disease
- Hyperglycaemia (high blood sugar)
- Hyperhidrosis
- Hypoglycaemia (low blood sugar)
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I
K
L
M
- Malaria
- Malignant brain tumour (cancerous)
- Malnutrition
- Measles
- Meningitis
- Menopause
- Mesothelioma
- Middle ear infection (otitis media)
- Migraine
- Miscarriage
- Motor neurone disease (MND)
- Mouth cancer
- Mouth ulcer
- Multiple myeloma
- Multiple sclerosis (MS)
- Mumps
- Meniere's disease
- Myasthenia gravis
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N
O
P
- Paget's disease of the nipple
- Pancreatic cancer
- Panic disorder
- Parkinson's disease
- Patau's syndrome
- Pelvic inflammatory disease
- Pelvic organ prolapse
- Penile cancer
- Peripheral neuropathy
- Personality disorder
- Pleurisy
- Pneumonia
- Polymyalgia rheumatica
- Post-polio syndrome
- Post-traumatic stress disorder (PTSD)
- Postnatal depression
- Pregnancy and baby
- Pressure ulcers
- Prostate cancer
- Psoriasis
- Psoriatic arthritis
- Psychosis
- Pubic lice
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R
S
- Scabies
- Scarlet fever
- Schizophrenia
- Scoliosis
- Septic shock
- Shingles
- Shortness of breath
- Sickle cell disease
- Sinusitis
- Sjogren's syndrome
- Skin cancer (melanoma)
- Skin cancer (non-melanoma)
- Slapped cheek syndrome
- Soft tissue sarcomas
- Soft tissue sarcomas: Teenagers and young adults
- Sore throat
- Spleen problems and spleen removal
- Stillbirth
- Stomach ache and abdominal pain
- Stomach cancer
- Stomach ulcer
- Streptococcus A (strep A)
- Stress, anxiety and low mood
- Stroke
- Sudden infant death syndrome (SIDS)
- Suicide
- Sunburn
- Swollen glands
- Syphilis
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T
- Testicular cancer
- Testicular cancer: Teenagers and young adults
- Testicular lumps and swellings
- Thirst
- Threadworms
- Thrush
- Thyroid cancer
- Thyroid cancer: Teenagers and young adults
- Tinnitus
- Tonsillitis
- Tooth decay
- Toothache
- Transient ischaemic attack (TIA)
- Trigeminal neuralgia
- Tuberculosis (TB)
- Type 1 diabetes
- Type 2 diabetes
- Trichomonas infection
- Transverse myelitis
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