Primary hypertension or essential hypertension is the condition of high blood pressure with no secondary cause. Blood pressure is the force exerted by blood against the artery walls as heart pump blood through the body. Hypertension occurs when the force is stronger than normal. The risk factors of essential hypertension are diet, stress and excess weight. Most people won’t notice any symptoms. The diagnoses include blood test, cholesterol levels, echo cardiogram, electro cardiogram, urine test or ultrasound test.