WebMD: Better Information. Better Health.
Skip to content
Other search tools:Symptoms|Doctors

Atrial Fibrillation Health Center

Atrial Fibrillation

Atrial fibrillation is an irregular heartbeat. Atrial fibrillation increases the risk of stroke and heart disease. Signs include dizziness, weakness, and fatigue. It is treated with medication and lifestyle changes.

AssessmentAre you at risk for a stroke?

DirectoryFind and compare hospitals
Latest Headlines
CRP Test May Not Predict Heart Disease
CRP, a marker of inflammation in the body, does not cause heart disease, and CRP measures don't help much in predicting heart disease, new studies show.

Newsletter

See all 30 newsletter topics

Symptoms

Symptoms of atrial fibrillation include:

  • Heart palpitations.
  • Irregular pulse.
  • Shortness of breath, especially during physical activity or emotional stress.
  • Weakness, fatigue.
  • Dizziness, confusion.
  • Lightheadedness or fainting (syncope).
  • Chest pain (angina).
Video

Learn about improved surgery.

Watch Video

Most Popular Stories