What are the symptoms of a coronary artery spasm?

What are the symptoms of a coronary artery spasm?

You may not have any noticeable symptoms of a coronary artery spasm. If you do, you might feel light chest pain, especially pain that occurs:

• During rest, often after midnight or in early morning hours.
• On the left side of your chest.

A coronary artery spasm may wake you up at night. You may have spasms as infrequently as a few times a year or as often as a few times a day.