What could cause sudden pain in the right side of the chest?

Sudden right-sided chest pain may be caused by non-disease factors or by medical conditions such as pleuritis or coronary atherosclerotic heart disease. Specific details are as follows:

1. Non-disease causes

This type of pain may result from sudden, intense emotional changes, leading to rapid contraction and expansion of the heart muscle, causing temporary myocardial ischemia and hypoxia. Symptoms usually improve with rest and deep breathing to regulate emotions.

2. Disease causes

1) Pleuritis

Recent decline in immunity may lead to viral or bacterial infections, causing inflammation of the pleural tissue (pleuritis), resulting in chest pain that often spreads over a relatively large area. If a bacterial infection is confirmed, antibiotics such as cefixime capsules, cefotaxime capsules, or cefuroxime axetil tablets should be used according to medical advice to help improve the condition.

2) Coronary Atherosclerotic Heart Disease

If coronary atherosclerosis is left untreated and unhealthy lifestyle habits are not corrected, the coronary arteries may become increasingly narrowed or blocked, leading to severe myocardial ischemia and hypoxia. This commonly results in coronary atherosclerotic heart disease, manifesting as significant angina pectoris and possibly causing sudden right-sided chest pain. Following a doctor's instructions, nitrate medications such as nitroglycerin tablets, phentolamine mesylate capsules, or isosorbide mononitrate tablets can help relieve pain.

In addition, acute myocardial infarction could also be a potential cause. It is recommended to seek prompt medical attention, undergo appropriate diagnostic tests to identify the exact cause, and receive targeted treatment accordingly.