Find a health condition from our A to Z list of common topics. 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 A ADHD in adults ADHD in children and young people Anaemia (iron deficiency) Anaemia (vitamin B12 or folate deficiency) Angina Appendicitis Arthritis Asthma Atrial fibrillation Autism View all A topics Back to top B Back pain Bipolar disorder Blood pressure (high) Blood pressure (low) Borderline personality disorder Bowel cancer Bronchiolitis Bronchiectasis Burns and scalds Bursitis View all B topics Back to top C Cancer Chest infection Chickenpox Cholesterol (high) Chronic kidney disease Chronic obstructive pulmonary disease (COPD) Coeliac disease Common cold COVID-19 Crohn's disease View all C topics Back to top D Dehydration Dementia Dental abscess Depression in adults Diabetes (type 1) Diabetes (type 2) Diabetic ketoacidosis Diverticular disease and diverticulitis DVT (deep vein thrombosis) Dyslexia View all D topics Back to top E Ear infections Earwax build-up Ectopic pregnancy Eczema (atopic) Eczema (discoid) Ehlers-Danlos syndromes Encephalitis Endometriosis Epilepsy Erectile dysfunction (impotence) View all E topics Back to top F Febrile seizures Female genital mutilation (FGM) Fibroids Fibromyalgia Flu Food allergy Food intolerance Food poisoning Frozen shoulder Fungal nail infection View all F topics Back to top G Gallstones Gastritis Generalised anxiety disorder (GAD) Genital herpes Gestational diabetes Glandular fever Glaucoma Gonorrhoea Gout Gum disease View all G topics Back to top H Haemochromatosis Haemorrhoids (piles) Hand, foot and mouth disease Head injury and concussion Heart attack Heart failure Heartburn and acid reflux Hiatus hernia Hyperthyroidism (overactive thyroid) Hypoglycaemia (low blood sugar) View all H topics Back to top I Idiopathic pulmonary fibrosis Impetigo Indigestion Infertility Inflammatory bowel disease Ingrown toenail Insect bites and stings Insomnia Intracranial hypertension Irritable bowel syndrome (IBS) View all I topics Back to top J Japanese encephalitis Jaundice Jaundice (newborn) Jellyfish and other sea creature stings Jet lag Joint hypermobility syndrome Back to top K Kawasaki disease Keloid scars Keratosis pilaris Kidney cancer Kidney failure, see Chronic kidney disease Kidney infection Kidney stones Klinefelter syndrome Knock knees Kyphosis View all K topics Back to top L Labyrinthitis and vestibular neuritis Lactose intolerance Laryngitis Leg cramps Liver disease Low white blood cell count Lung cancer Lupus Lyme disease Lymphoedema View all L topics Back to top M Measles Ménière's disease Meningitis Menopause Migraine Miscarriage Molluscum contagiosum Mouth ulcers Multiple sclerosis Myalgic encephalomyelitis or chronic fatigue syndrome (ME/CFS) View all M topics Back to top N Nappy rash Narcolepsy Nasal polyps Newborn jaundice Night terrors and nightmares Non-alcoholic fatty liver disease (NAFLD) Non-allergic rhinitis Non-Hodgkin lymphoma Norovirus (vomiting bug) Nosebleed View all N topics Back to top O Obesity Obsessive compulsive disorder (OCD) Oesophageal cancer Oral thrush (mouth thrush) Osteoarthritis Osteomyelitis Osteophyte (bone spur) Osteoporosis Ovarian cancer Ovarian cyst View all O topics Back to top P Pancreatitis (acute) Parkinson's disease Peripheral neuropathy Piles (haemorrhoids) Plantar fasciitis Pneumonia Polycystic ovary syndrome Postural tachycardia syndrome (PoTS) Pre-eclampsia Prostate cancer View all P topics Back to top Q Q fever Back to top R Rabies Raynaud's Reflux in babies Respiratory syncytial virus (RSV) Respiratory tract infections (RTIs) Restless legs syndrome Retinal migraine Rheumatoid arthritis Ringworm Rosacea View all R topics Back to top S Scabies Scarlet fever Sciatica Sepsis Shingles Sinusitis (sinus infection) Slapped cheek syndrome Sleep apnoea Stomach ulcer Stroke View all S topics Back to top T Temporomandibular disorder (TMD) Tendonitis Threadworms Thrush in men and women Tinnitus Tonsillitis Transient ischaemic attack (TIA) Trigeminal neuralgia Type 1 diabetes Type 2 diabetes View all T topics Back to top U Ulcerative colitis Underactive thyroid (hypothyroidism) Undescended testicles Urethritis Urinary incontinence Urinary tract infections (UTIs) Uveitis Back to top V Vaginismus Vaginitis Varicose eczema Varicose veins Vascular dementia Vasculitis Vertigo Vitamin B12 or folate deficiency anaemia Vitiligo Vulval cancer View all V topics Back to top W Warts and verrucas Whiplash Whooping cough Wolff-Parkinson-White syndrome Womb (uterus) cancer Worms in humans Back to top X There are currently no topics listed Back to top Y Yellow fever Back to top Z Zika virus Back to top