Plain language reference for 135 conditions, A to Z, with symptoms, causes, diagnosis, treatment and common questions.
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All 135 conditions
Stomach ache, Belly pain, Tummy pain
Pain anywhere between the chest and the groin, from many possible causes
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Acne vulgaris, Spots
Blocked inflamed hair follicles causing spots and cysts
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Hay fever, Seasonal allergies
Allergic nasal inflammation causing sneezing and congestion
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Alzheimers, Alzheimer type dementia
Progressive brain disease causing memory loss and cognitive decline
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Anaphylactic shock, Severe allergic reaction
Life threatening allergic reaction needing immediate adrenaline
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Anaemia, Low haemoglobin
Reduced red blood cells or haemoglobin limiting oxygen delivery
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Angina pectoris
Chest discomfort from reduced blood flow to the heart muscle
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Generalised anxiety disorder, GAD
Persistent excessive worry that interferes with daily life
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Inflammation of the appendix causing worsening abdominal pain
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Joint inflammation
Inflammation of one or more joints causing pain and stiffness
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Chronic airway inflammation causing reversible narrowing and wheeze
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Tinea pedis, Fungal foot infection
Itchy fungal infection of the skin between the toes
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AF, AFib, Irregular heartbeat
Irregular rapid heart rhythm that raises stroke risk
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Lower back pain, Lumbago
Pain in the back, most often without a serious underlying cause
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Facial nerve palsy, Idiopathic facial paralysis
Sudden weakness on one side of the face from facial nerve inflammation
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BPH, Enlarged prostate
Non cancerous prostate enlargement causing urinary symptoms
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Manic depression
Mood disorder with episodes of mania or hypomania and depression
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Chest cold
Inflammation of the bronchial tubes causing persistent cough
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Median nerve compression
Compression of the median nerve at the wrist causing hand numbness
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Coeliac disease, Gluten sensitive enteropathy
Immune reaction to gluten that damages the small intestine
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Skin infection
Bacterial infection of the deeper layers of skin
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Varicella
Common childhood viral infection with an itchy blistering rash
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ME, Myalgic encephalomyelitis, ME/CFS, Chronic Fatigue
Disabling fatigue worsened by exertion and not relieved by rest
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CKD, Chronic renal failure
Gradual permanent loss of kidney function over months or years
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Upper respiratory tract infection, Head cold
Mild viral infection of the nose and throat
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Pink eye, Red eye
Inflammation of the membrane covering the eye and eyelid
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Infrequent or difficult bowel movements with hard stool
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Chronic Obstructive Pulmonary Disease, Emphysema, Chronic bronchitis
Progressive airflow obstruction usually caused by smoking
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Coronavirus, SARS-CoV-2 infection
Respiratory infection caused by the SARS-CoV-2 virus
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Crohns, Inflammatory bowel disease
Chronic inflammation that can affect any part of the digestive tract
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DVT, Blood clot in the leg
Blood clot forming in a deep vein, usually of the leg
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Insufficient body fluid to support normal function
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Major depressive disorder, Clinical depression
Persistent low mood and loss of interest affecting daily function
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Type 2 diabetes, Diabetes mellitus
Raised blood glucose from insulin resistance or deficiency
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Diverticular disease
Inflammation or infection of small pouches in the colon wall
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Atopic dermatitis
Chronic itchy inflammatory skin condition with a damaged barrier
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Tissue similar to the womb lining growing outside the uterus
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Seizure disorder
Tendency to recurrent unprovoked seizures from abnormal brain activity
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ED, Impotence
Persistent difficulty achieving or maintaining an erection
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MASLD, NAFLD, Hepatic steatosis
Fat accumulation in the liver linked to metabolic health
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Fibromyalgia syndrome, FMS
Widespread pain with fatigue and altered pain processing
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Foodborne illness, Gastroenteritis
Illness from eating food contaminated with germs or toxins
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Cholelithiasis, Biliary colic
Hardened deposits in the gallbladder that can block bile flow
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Gastro oesophageal reflux disease, Gastroesophageal reflux, Acid reflux, Reflux, Heartburn
Stomach acid flowing back into the oesophagus causing symptoms
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Optic nerve damage that causes irreversible peripheral vision loss
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Gouty arthritis, Urate crystal arthritis
Sudden severe joint inflammation from uric acid crystals
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Nits, Pediculosis capitis
Small insects living in the hair, spread by head to head contact
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Myocardial infarction, MI
Blockage of blood flow to part of the heart muscle
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Congestive heart failure, CHF
The heart cannot pump enough blood to meet the body needs
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Piles, Haemorrhoids
Swollen blood vessels in the anus and lower rectum
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HBV infection
Viral liver infection that can become chronic and cause cirrhosis
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Hyperlipidaemia, Hypercholesterolaemia
Raised blood fats that build up in artery walls
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Human immunodeficiency virus
Virus that damages immune cells, controllable with daily treatment
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High blood pressure
Persistently raised blood pressure that damages arteries over time
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Overactive thyroid, Thyrotoxicosis
Excess thyroid hormone speeding up body processes
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Underactive thyroid
Insufficient thyroid hormone slowing many body processes
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School sores
Contagious bacterial skin infection with golden crusts
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Dyspepsia, Upset stomach
Discomfort in the upper abdomen after eating
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Flu, Seasonal influenza
Contagious viral respiratory illness with abrupt fever and aches
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Sleeplessness, Chronic insomnia disorder
Persistent difficulty falling or staying asleep with daytime impact
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Bladder pain syndrome, IC/BPS
Chronic bladder pain with urgency and frequency without infection
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Low iron, Iron deficiency anaemia
Anemia caused by insufficient iron to make haemoglobin
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IBS, Spastic colon
Chronic abdominal pain with altered bowel habit and no structural damage
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Icterus, Yellowing of the skin
Yellowing of skin and eyes from raised bilirubin
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JIA, Childhood arthritis
Persistent joint inflammation beginning before age 16
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Mucocutaneous lymph node syndrome
Childhood vasculitis that can damage the coronary arteries
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Pyelonephritis, Upper urinary tract infection
Bacterial infection that has reached one or both kidneys
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Renal calculi, Nephrolithiasis
Hard mineral deposits forming in the kidneys causing severe pain
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Lactase deficiency
Digestive symptoms after dairy due to reduced lactase enzyme
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Bronchogenic carcinoma
Malignant tumour arising in the lung tissue or airways
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SLE, Systemic lupus erythematosus
Autoimmune disease that can affect skin, joints, kidneys and other organs
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Lyme borreliosis
Bacterial infection transmitted by infected tick bites
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Rubeola
Highly contagious viral illness with fever and characteristic rash
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Malignant melanoma, Skin cancer
Aggressive skin cancer arising from pigment producing cells
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Inflammation of the membranes surrounding the brain and spinal cord
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Climacteric, Change of life
Natural end of menstruation with falling oestrogen levels
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Migraine headache, Migraine with aura
Recurrent moderate to severe headache with sensitivity to light and sound
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Aphthous ulcers, Canker sores
Painful sores inside the mouth that usually heal on their own
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MS
Immune mediated damage to the protective covering of nerve fibres
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Chronic neurological disorder of sleep wake regulation
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Heavy protein loss in urine causing swelling and low blood protein
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Winter vomiting bug, Viral gastroenteritis
Highly contagious virus causing sudden vomiting and diarrhoea
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Epistaxis
Bleeding from the nose, usually from the front of the septum
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Excess body fat that increases the risk of other diseases
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OSA, Sleep apnoea
Repeated airway collapse during sleep causing breathing pauses
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Degenerative joint disease, OA
Joint pain and stiffness from progressive cartilage loss
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Brittle bone disease, Low bone density
Weakened bone structure that increases fracture risk
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Middle ear infection, Glue ear
Infection or fluid collection in the middle ear
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Inflammation of the pancreas causing severe abdominal pain
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Parkinsons, PD
Progressive neurological disorder affecting movement control
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Stomach ulcer, Duodenal ulcer
Breaks in the stomach or duodenal lining causing pain and bleeding
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Infection causing inflammation and fluid in the lung air sacs
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PCOS
Hormonal disorder with irregular periods and raised androgens
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Immune driven skin disease with thick scaly plaques
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PE, Blood clot on the lung
Blood clot blocking an artery in the lungs
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Query fever, Coxiella burnetii infection
Bacterial infection caught from livestock causing flu like illness
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RLS, Willis Ekbom disease
Urge to move the legs with unpleasant sensations at rest
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RA
Autoimmune disease causing symmetrical joint inflammation and damage
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Tinea corporis, Fungal skin infection
Fungal skin infection forming a red ring shaped rash
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Chronic facial redness with flushing, bumps and visible vessels
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Respiratory syncytial virus, Bronchiolitis
Common respiratory virus that can cause severe illness in infants
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Intensely itchy rash caused by mites burrowing in the skin
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Scarlatina
Streptococcal infection with a characteristic sandpaper rash
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Lumbar radiculopathy
Nerve root pain radiating from the back down the leg
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Blood poisoning, Septicaemia
Life threatening overreaction of the body to an infection
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Herpes zoster
Painful blistering rash from reactivated chickenpox virus
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Sickle cell anaemia, SCD
Inherited disorder producing rigid crescent shaped red blood cells
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Rhinosinusitis, Sinus infection
Inflammation of the sinus lining causing facial pain and congestion
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Pharyngitis
Painful throat, usually viral and self limiting
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Streptococcal pharyngitis, Group A strep
Bacterial throat infection causing sore throat and fever
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Cerebrovascular accident, Brain attack
Sudden loss of brain function from interrupted blood supply
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Skin damage from ultraviolet radiation causing redness and pain
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Pinworms, Enterobiasis
Small worms causing itching around the anus, common in children
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Ringing in the ears
Perception of sound without an external source
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Inflammation of the tonsils causing sore throat and difficulty swallowing
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Tic douloureux
Sudden severe electric shock like facial pain
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TB, Consumption
Bacterial infection usually of the lungs spread through the air
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Insulin dependent diabetes, T1D
Autoimmune destruction of insulin producing cells requiring insulin therapy
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UC, Inflammatory bowel disease
Chronic inflammation and ulceration of the colon lining
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UTI, Cystitis, Bladder infection
Bacterial infection of the bladder, urethra or kidneys
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Hives, Nettle rash
Itchy raised weals that come and go, sometimes with swelling
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Enlarged twisted veins from valve failure in the legs
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BPPV, Benign paroxysmal positional vertigo
False sensation of spinning or movement
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Hypovitaminosis D, Rickets, Osteomalacia
Low vitamin D affecting bone health and muscle function
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Loss of skin pigment producing well defined white patches
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Verruca, Viral warts
Rough skin growths caused by human papillomavirus
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WNV infection
Mosquito borne virus that can cause neurological illness
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Pertussis, 100 day cough
Highly contagious bacterial infection causing violent coughing fits
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Hepatolenticular degeneration
Inherited disorder causing toxic copper accumulation
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XP
Rare inherited inability to repair ultraviolet damage to DNA
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Dry mouth
Reduced saliva causing dryness, dental decay and difficulty eating
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Candidiasis, Thrush, Vaginal candidiasis
Overgrowth of Candida yeast causing itching and discharge
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Mosquito borne viral illness that can cause liver failure
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Zika fever
Mosquito borne infection that can cause severe birth defects
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Gastrinoma, ZES
Tumour driven acid oversecretion causing severe recurrent ulcers
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Medical Disclaimer: This library is general health information, not a diagnosis, and it does not replace clinical judgement. Always consult a qualified healthcare professional about diagnosis and treatment.