Esophageal spasms are painful, abnormal muscle contractions that occur within the esophagus. The esophagus is a narrow, muscular tube that transports food and drink to the stomach. It’s about 10 ...

A coronary artery spasm is a sudden tightening of the muscles within the arteries of your heart. When this occurs, your arteries narrow and prevent blood from flowing to your heart. Coronary artery ...

A muscle spasm — also known as a charley horse, muscle cramp or twitch — is a sudden, involuntary movement in one or more muscles. Common causes include stress, exercise, or dehydration, but nerve ...

Abdominal spasms — which some people refer to as stomach spasms or twitching — occur when muscles in the stomach or intestines contract. These spasms can range in intensity and duration. Stomach ...