iSymptom

What is your symptom telling you?

Clear, careful guides to 790 symptoms and 2,661 conditions. Find out what is likely, what is serious, and what to do next.

Or browse symptoms A–Z · conditions A–Z

Most-read symptom guides

All symptoms
Side PainSide pain (pain in your side) is pain felt along the side of your body, between the lower ribs and the hip.Coryza (Runny Nose)Coryza is the medical term for inflammation of the lining of the nose that makes it run, block up and sneeze.Arm Lump or MassA lump on the arm is most often harmless: a soft fatty lipoma, a skin cyst, a firm dermatofibroma, or a swollen bump from a bite, injury or infection.Feeling HotFeeling hot means your body feels warm or overheated even when the room is not.Leg Lump or MassA lump in the leg is any bump, swelling or mass you can see or feel in the thigh, knee area, shin or calf.Suprapubic PainSuprapubic pain is pain in the lowest part of the belly, in the middle, just above the pubic bone.Wrist SwellingA swollen wrist is puffiness or a visible bulge around the wrist joint, from fluid, inflammation, bleeding or a lump.Lacrimation (Excessive Tearing)Lacrimation is the medical term for the production and flow of tears.Tongue LesionsA tongue lesion is any sore, ulcer, patch, bump or area of changed color or texture on the tongue.Foot or Toe Lump or MassA foot or toe lump or mass is any bump, swelling or nodule you can see or feel on the foot or toes.Mouth PainMouth pain is soreness, burning or aching anywhere in the mouth: the teeth, gums, tongue, cheeks, lips, palate or floor of the mouth.Hand or Finger LumpA lump on the finger or hand is almost always benign.

Browse symptoms by body system

Brain & nerves70 symptomsMental health & sleep53 symptomsEyes & vision62 symptomsEar, nose & throat43 symptomsMouth & teeth22 symptomsHeart & circulation30 symptomsLungs & breathing25 symptomsDigestive system62 symptomsKidneys & urinary tract30 symptomsWomen's & pregnancy health62 symptomsMen's health22 symptomsSkin, hair & nails81 symptomsBones, joints & muscles111 symptomsHormones & metabolism11 symptomsBlood & immune system10 symptomsInfections7 symptomsCancer5 symptomsChildren's health33 symptomsInjuries & poisoning1 symptomsWhole body & general50 symptoms

Common conditions

All conditions
DiabetesDiabetes (diabetes mellitus) is a long-term condition in which blood sugar (glucose) stays too high because the body does not make enough insulin, or cannot use it…High Blood Pressure (Hypertension)High blood pressure, or hypertension, is blood pressure that stays at or above 130/80 mm Hg.AsthmaAsthma is a long-term lung condition in which the airways are inflamed and overly sensitive, so they tighten, swell and fill with mucus in response to triggers such…Kidney StonesKidney stones (nephrolithiasis) are hard deposits of minerals and salts that form inside the kidneys when urine becomes too concentrated.MigraineMigraine is a common neurological condition that causes repeated attacks of moderate to severe headache, usually throbbing and on one side, lasting 4 to 72 hours.Gastroesophageal Reflux Disease (GERD)Gastroesophageal reflux disease (GERD) is a long-term condition in which stomach contents flow back into the esophagus often enough to cause troublesome symptoms or…Urinary Tract Infection (UTI)A urinary tract infection (UTI) is a bacterial infection anywhere in the urinary system, most often the bladder (cystitis).HypothyroidismHypothyroidism means the thyroid gland does not make enough thyroid hormone, slowing the body's metabolism.Depression (Major Depressive Disorder)Depression, or major depressive disorder, is a common medical condition in which low mood or loss of interest lasts at least two weeks and comes with symptoms such…AnemiaAnemia is a condition in which the blood has too few healthy red blood cells or too little hemoglobin to carry enough oxygen to the body.PneumoniaPneumonia is an infection that inflames the air sacs in one or both lungs, filling them with fluid or pus.OsteoarthritisOsteoarthritis (OA) is the most common type of arthritis: a long-term condition in which the cartilage cushioning the ends of bones wears and the whole joint…

How every guide works

  1. The short answer first. Each page opens with what the symptom or condition is and what usually causes it.
  2. When to get help. A clear triage box separates emergencies from problems that can wait for an appointment or be handled at home.
  3. Causes, ranked by how likely they are. Common, harmless causes come first, with the clues that point to something more serious.
  4. What a doctor will do. The questions, tests and treatments to expect, so you can go in prepared.

iSymptom is an educational reference, not a diagnosis. How we write and check our guides.