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Explore our knowledge base of medical conditions.

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Gastroenteritis

Gastrointestinal

Inflammation of the stomach and intestines, commonly called stomach flu, usually caused by viral or bacterial infection.

Common Symptoms:

nausea vomiting diarrhea abdominal pain fever fatigue +2 more

Risk Factors:

  • Contaminated food or water
  • Close contact with infected person
  • Weakened immune system

Seek care: If you cannot keep fluids down for 24 hours, have bloody diarrhea, fever over 104F, or signs of dehydration.

Gastroesophageal Reflux Disease (GERD)

Gastrointestinal

A chronic digestive disease where stomach acid frequently flows back into the esophagus, causing irritation.

Common Symptoms:

chest pain difficulty swallowing nausea cough sore throat

Risk Factors:

  • Obesity
  • Pregnancy
  • Smoking

Seek care: If you have severe or frequent heartburn, difficulty swallowing, persistent nausea, or unexplained weight loss.

Irritable Bowel Syndrome (IBS)

Gastrointestinal

A chronic gastrointestinal disorder causing abdominal pain and changes in bowel habits without structural abnormalities.

Common Symptoms:

abdominal pain bloating diarrhea constipation nausea fatigue

Risk Factors:

  • Female sex
  • Age under 50
  • Family history

Seek care: If you have unexplained weight loss, rectal bleeding, persistent vomiting, or difficulty swallowing.