Coronary heart disease refers to the condition where the coronary arteries undergo arteriosclerotic changes, leading to the narrowing or blockage of the vessel lumen, which in turn causes myocardial ischemia, hypoxia, or necrosis, resulting in a series of heart conditions. Some of the early manifestations of this disease often include chest pain triggered by physical activity or emotional agitation. Sometimes it can also manifest as a feeling of suffocation and pain, which often appears as paroxysmal angina or crushing pain, and may radiate to other areas such as the shoulder, upper arm, and fingers. Resting or taking medications like nitroglycerin can significantly alleviate symptoms. Other possible symptoms include fever, sweating, panic, nausea, vomiting, etc.