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Certain heart conditions can cause a coronary artery spasm, including:

  • Atherosclerosis, when your arteries build up with plaque and become narrow.
  • High blood pressure.
  • High cholesterol.

Often, something triggers a coronary artery spasm, such as:

  • Tobacco use.
  • Exposure to cold temperatures.
  • Extreme stress.
  • Use of stimulants, such as amphetamines or cocaine.
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