Search the body's vocabulary.
Browse hundreds of conditions with symptoms, causes, treatment, and red flags.
Migraine
Recurrent moderate-to-severe pulsating headaches, often with nausea and light sensitivity.
Tension Headache
The most common headache, often felt as a tight band around the head.
Cluster Headache
Severe one-sided headaches around the eye, occurring in clusters over weeks.
Cervicogenic Headache
Headache referred from problems in the neck — often one-sided and triggered by neck movement.
Cervical Strain
Muscle or ligament strain in the neck causing stiffness and pain.
Stroke
Sudden interruption of blood flow to the brain — every minute counts.
Transient Ischemic Attack
A 'mini-stroke' with brief stroke-like symptoms — a major warning sign.
Concussion
A traumatic brain injury affecting brain function, usually temporary.
Brain Tumor
Abnormal growth of cells in the brain — symptoms vary by location.
Meningitis
Inflammation of the membranes surrounding the brain and spinal cord — can be life-threatening.
Encephalitis
Inflammation of the brain itself, often viral — a medical emergency.
Epilepsy
A neurological disorder causing recurrent unprovoked seizures.
Subarachnoid Hemorrhage
Bleeding into the space surrounding the brain — classic 'thunderclap' headache.
Bell's Palsy
Sudden one-sided facial weakness from inflammation of the facial nerve.
Multiple Sclerosis
An autoimmune disease that damages the protective covering of nerves.
Parkinson's Disease
A progressive nervous system disorder affecting movement.
Alzheimer's Disease
A progressive disease that destroys memory and other mental functions.
Vertigo
A spinning sensation often caused by inner-ear problems.
Carpal Tunnel Syndrome
Compression of the median nerve at the wrist causing tingling and weakness.
Sciatica
Pain radiating along the sciatic nerve from the lower back down the leg.
Conjunctivitis (Pink Eye)
Inflammation of the eye's outer membrane — viral, bacterial, or allergic.
Stye
A red, painful lump near the edge of the eyelid.
Glaucoma
Damage to the optic nerve, often from elevated eye pressure — can cause blindness.
Dry Eye
A common condition where the eyes don't produce enough tears.
Middle Ear Infection
Infection of the middle ear, common in children.
Swimmer's Ear
Outer ear canal infection often from trapped moisture.
Tinnitus
Ringing or buzzing in the ears without an external sound source.
Common Cold
A mild viral upper respiratory infection.
Influenza (Flu)
A contagious respiratory illness caused by influenza viruses.
COVID-19
Respiratory illness caused by SARS-CoV-2, ranging from mild to severe.
Pneumonia
Lung infection causing alveolar inflammation, cough, fever, and breathing difficulty.
Bronchitis
Inflammation of the bronchial tubes — usually viral, sometimes bacterial.
Asthma
Chronic airway inflammation causing wheezing, breathlessness, and chest tightness.
COPD
Chronic obstructive pulmonary disease — progressive airway disease.
Strep Throat
Bacterial throat infection caused by group A Streptococcus.
Tonsillitis
Inflammation of the tonsils, usually viral.
Laryngitis
Inflammation of the voice box causing hoarseness.
Sinusitis
Inflammation of the sinuses, often after a cold.
Allergic Rhinitis (Hay Fever)
An allergic response causing sneezing, congestion, and itchy eyes.
Whooping Cough
Highly contagious bacterial respiratory infection.
Tuberculosis
A bacterial infection that mainly affects the lungs.
Angina
Chest pain from reduced blood flow to the heart, often triggered by exertion.
Heart Attack
Blockage of blood flow to the heart muscle — a life-threatening emergency.
Arrhythmia
Irregular heartbeat — can range from harmless to life-threatening.
Atrial Fibrillation
An irregular, often rapid heart rhythm that increases stroke risk.
Pericarditis
Inflammation of the lining around the heart — sharp chest pain that worsens with breathing.
Pulmonary Embolism
A blood clot lodged in the pulmonary arteries — can be rapidly fatal.
Heart Failure
The heart can't pump blood as well as it should.
High Blood Pressure
Chronically elevated blood pressure — a major risk factor for stroke and heart attack.
Deep Vein Thrombosis
A blood clot in a deep vein, usually in the leg — can travel to the lungs.
Aortic Dissection
A tear in the aorta's inner wall — extreme tearing chest/back pain.
Food Poisoning
Illness from contaminated food — usually self-limited but can be severe.
Gastritis
Inflammation of the stomach lining causing pain and nausea.
Peptic Ulcer
An open sore in the stomach or upper intestine lining.
GERD (Acid Reflux)
Chronic acid reflux that irritates the esophagus.
Appendicitis
Inflammation of the appendix requiring urgent surgical evaluation.
Gallstones
Hardened deposits of digestive fluid in the gallbladder.
Hepatitis
Inflammation of the liver, often viral.
Pancreatitis
Inflammation of the pancreas — can be acute or chronic.
Irritable Bowel Syndrome
A functional bowel disorder causing recurring abdominal pain and bowel changes.
Crohn's Disease
An inflammatory bowel disease causing inflammation of the digestive tract.
Ulcerative Colitis
An inflammatory bowel disease affecting the colon and rectum.
Gastroenteritis
Inflammation of the stomach and intestines, usually viral.
Hemorrhoids
Swollen veins in the lowest part of the rectum and anus.
Bowel Obstruction
A blockage in the small or large intestine — needs urgent care.
Urinary Tract Infection
An infection in any part of the urinary system.
Kidney Infection
A bacterial infection of one or both kidneys.
Kidney Stones
Hard mineral deposits forming in the kidneys, causing severe flank pain.
Vaginal Yeast Infection
A common fungal infection causing itching and discharge.
Bacterial Vaginosis
An imbalance of vaginal bacteria causing discharge and odor.
Endometriosis
Tissue similar to the uterine lining grows outside the uterus, causing pain.
Ectopic Pregnancy
Pregnancy that implants outside the uterus — a medical emergency.
Ovarian Cyst
A fluid-filled sac on or in an ovary.
Pelvic Inflammatory Disease
An infection of the female reproductive organs.
Testicular Torsion
Twisting of the spermatic cord cutting off blood flow — needs surgery within hours.
Prostatitis
Inflammation of the prostate gland.
Eczema
A chronic itchy inflammatory skin condition.
Psoriasis
An autoimmune skin condition causing thick, scaly plaques.
Allergic Rash
A skin reaction triggered by an allergen — hives, itching, swelling.
Fungal Skin Infection
A superficial fungal infection of the skin — itchy, red, sometimes flaky.
Cellulitis
A bacterial skin infection causing redness, warmth, and swelling — can spread quickly.
Shingles
A painful blistering rash caused by reactivation of the chickenpox virus.
Chickenpox
A highly contagious viral infection causing an itchy, blistering rash.
Measles
A highly contagious viral disease — preventable by vaccination.
Scabies
An itchy skin infestation by tiny burrowing mites.
Acne
A common skin condition with pimples, blackheads, and inflammation.
Anaphylaxis
A severe, life-threatening allergic reaction.
Food Allergy
An immune reaction to a specific food — can be mild to life-threatening.
Diabetes
A chronic disease affecting how the body uses glucose.
Hyperthyroidism
An overactive thyroid producing too much thyroid hormone.
Hypothyroidism
An underactive thyroid producing too little thyroid hormone.
Adrenal Insufficiency
The adrenal glands don't produce enough cortisol.
Lower Back Strain
A pulled or torn muscle in the lower back, often from lifting or twisting.
Rheumatoid Arthritis
An autoimmune disorder causing painful, swollen joints.
Osteoarthritis
Wear-and-tear arthritis causing joint pain and stiffness.
Gout
A form of arthritis from uric acid crystal buildup, often in the big toe.
Fibromyalgia
Widespread musculoskeletal pain with fatigue and sleep issues.
Plantar Fasciitis
Inflammation of the plantar fascia causing heel and arch pain, worst with first steps.
Foot Strain
Overworked muscles or ligaments in the foot, often after long walks or new activity.
Tendinitis
Inflammation of a tendon from overuse — common in the foot, ankle, and Achilles.
Stress Fracture
A small crack in a bone from repetitive force — often in the foot or shin.
Diabetic Neuropathy
Nerve damage from long-standing diabetes, often felt as burning or numbness in the feet.
Dehydration
Loss of body fluids causing fatigue, dizziness, and weakness.
Anemia
Low red blood cell count causing fatigue and weakness.
Sepsis
A life-threatening response to infection — call 911 if suspected.
Mononucleosis
Viral infection often called 'mono', causing prolonged fatigue.
Lyme Disease
A tick-borne bacterial infection — early treatment is important.
Viral Infection (Generic)
A general viral illness with fever, fatigue, and body aches.
Anxiety Disorder
Excessive worry that interferes with daily life — often with physical symptoms.
Panic Disorder
Recurrent unexpected panic attacks with intense physical symptoms.
Depression
Persistent feelings of sadness and loss of interest affecting daily life.
Post-Traumatic Stress Disorder
A mental health condition triggered by experiencing a terrifying event.