Angina
Chest pain on the left side is a symptom of angina, [5] which develops when there is reduced blood flow to the heart muscle. It may radiate to the arm or neck and last for five to ten minutes.
People with high blood pressure, smokers, and those with excessive cholesterol are more likely to have this illness.
How to treat it
The best course of action is to see a cardiologist, who will prescribe cardiac testing to verify the diagnosis. Angina can typically be managed with medicine and a change in lifestyle. It can lead to major consequences like infarct, arrhythmia, and even a stroke if it is not adequately managed.