Acute coronary syndromes (ACS)
STEMI
Non-STEMI
Unstable angina<unk><unk> 
Cardiac tamponade
Coronary artery<unk> 
Esophageal perforation (Boerhhaave's syndrome)
Pulmonary embolism
Tension pneumothorax
STEMI
Non-STEMI
Unstable angina
Cholecystitis
Cocaine-associated chest pain
Mediastinitis
Myocardial rupture
Myocarditis
Pancreatitis
Pericarditis
Pneumothorax<unk>  stenosis
Arthritis
Asthma exacerbation
Biliary colic
Costochondritis
Esophageal spasm
Gastroesophageal reflux disease
Herpes zoster / Postherpetic Neuralgia
Hypertrophic cardiomyopathy
Hyperventilation
Mitral valve prolapse
Panic attack
Peptic ulcer disease
Pleuritis
Pneumomediastinum
Pneumonia
Rib fracture
Stable angina<unk>  outlet syndrome
Valvular heart disease
Muscle sprain
Psychologic / Somatic Chest Pain
Spinal Root Compression
Tumor
Hypertensive emergency
Stroke
Sympathetic crashing acute pulmonary edema
Ischemic stroke
Intracranial hemorrhage
Preeclampsia/Eclampsia
Autonomic dysreflexia
Scleroderma renal crisis
Acute glomerulonephritis
Type- I myocardial infarction
Volume overload
Urinary obstruction
Drug use or overdose (e.g stimulants, especially alcohol, cocaine, or Synthroid)
Renal Artery Stenosis
Nephritic and nephrotic syndrome
Polycystic kidney disease
Tyramine reaction
Cushing's syndrome
Obstructive sleep apnea
Pheochromocytoma
Hyperaldosteronism
Hyperthyroidism
Anxiety
Pain
Oral contraceptive use
Nontraumatic thoracic aortic dissection
Acute coronary syndromes 
Coronary artery dissection
STEMI
Left ventricular aneurysm
Non-STEMI
Left ventricular pseudoaneurysm
Unstable angina