Angina is an underlying heart condition, its cause is reduced blood flow to an area of heart muscle. Coronary artery disease (CAD) usually causes the reduced blood flow.

Inflammation of the lining of the lungs causes sharp chest pain, smoking, high levels of fat and cholesterol in the blood, high blood pressure, and a high level of sugar in the blood (due to insulin resistance or diabetes) can damage the coronary causes sharp chest pain called angina.

Like all the other organs in your body, your heart needs a constant supply of oxygen-rich blood to function normally. Angina is caused by reduced blood flow to your heart muscle.

During exercise or stress, muscles in your heart work harder so the demand for blood increases. some other causes are;  Tobacco smoking, Diabetes, Being overweight or obese, Metabolic syndrome, Sedentary lifestyle,Being over 45 for men and over 55 for women.

Neuropathic pain often seems to have no obvious cause; some common causes of neuropathic pain include:

Alcoholism, Amputation, Back, leg, and hip problems, Chemotherapy, Diabetes,  Neuropathic pain results from damage to or dysfunction of the peripheral or central nervous system.

Diabetes can destroy small blood vessels, which in turn can damage the nervous system, and these damaged nerves can cause unbearable pain. The pain can be found anywhere along their path, from the tip of the toe to the brain.

A heart attack pain is caused by coronary heart disease, or coronary artery disease. Heart pain may be caused by cholesterol buildup in the coronary arteries (atherosclerosis), blood clots, or spasm of the vessels that supply blood to the heart.

Angina is a type of heart-related chest pain. This pain occurs because your heart is not getting enough blood and oxygen. Inflammation or infection in the tissue around the heart (pericarditis) causes pain in the center part of the chest. Pneumonia, which causes chest pain that usually feels sharp, and often gets worse when you take a deep breath or cough.