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What are symptoms of atrial fibrillation (AFib)?

ANSWER

  • Heartbeat that feels off, like it's racing, quivering, fluttering, thumping, or flip-flopping
  • Pain in your chest
  • You feel confused
  • Feel dizzy or light-headed
  • Get tired or weak
  • Find it hard to exercise because you tire quickly
  • Get short of breath
  • Sweat more than usual

SOURCES:

Hormone Health Network: "What Does the Thyroid Gland Do?"

UpToDate.com: "Patient education: Hypothyroidism (underactive thyroid) (Beyond the Basics)."

Harvard Health Publications, Harvard Medical School: "Thyroid disorders and heart conditions: What's the connection?"

AllThyroid.org: "Heart Problems: Arrhythmias including atrial fibrillation, mitral valve prolapse."

Medscape: "Thyrotoxic Atrial Fibrillation."

Mayo Clinic: "Hyperthyroidism (Overactive Thyroid)," "Atrial Fibrillation."

NIH, National Institute of Diabetes and Digestive and Kidney Diseases: "Hyperthyroidism (Overactive Thyroid)," "Thyroid Tests."

NIH, National Heart, Lung, and Blood Institute: "How Is Atrial Fibrillation Diagnosed?"

American Heart Association: "What are the Symptoms of Atrial Fibrillation (AFib or AF)?"

Columbia University: "Radioactive Iodine."

Reviewed by James Beckerman on July 25, 2017

SOURCES:

Hormone Health Network: "What Does the Thyroid Gland Do?"

UpToDate.com: "Patient education: Hypothyroidism (underactive thyroid) (Beyond the Basics)."

Harvard Health Publications, Harvard Medical School: "Thyroid disorders and heart conditions: What's the connection?"

AllThyroid.org: "Heart Problems: Arrhythmias including atrial fibrillation, mitral valve prolapse."

Medscape: "Thyrotoxic Atrial Fibrillation."

Mayo Clinic: "Hyperthyroidism (Overactive Thyroid)," "Atrial Fibrillation."

NIH, National Institute of Diabetes and Digestive and Kidney Diseases: "Hyperthyroidism (Overactive Thyroid)," "Thyroid Tests."

NIH, National Heart, Lung, and Blood Institute: "How Is Atrial Fibrillation Diagnosed?"

American Heart Association: "What are the Symptoms of Atrial Fibrillation (AFib or AF)?"

Columbia University: "Radioactive Iodine."

Reviewed by James Beckerman on July 25, 2017

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