Strong<unk> s of the musculature of the esophagus that can last minutes to hours and mimic the chest pain of angina
Unclear what causes<unk> . Possibly related to food intolerance.
Esophageal spasm
Acute coronary syndromes 
Achalasia
STEMI
Esophageal injury
Non-STEMI
Subglottic stenosis
Unstable angina