Hypertension is defined as systolic blood pressure greater than 140 mmHg and/or diastolic blood pressure greater than 90 mmHg. It can be primary, with no known cause, or secondary, caused by conditions like kidney disease or hormonal issues. It is classified by severity and can lead to damage of organs like the heart, brain, and kidneys if left untreated. Treatment involves lifestyle changes like diet, exercise, and reducing stress as well as medications like diuretics, beta-blockers, calcium channel blockers, and ACE inhibitors. Angina pectoris is chest pain due to reduced blood flow to the heart muscle. There are three main types: stable caused by exertion, unstable