obvious underlying (潜在的,根本的) medical cause. ? 90-95% ? Secondary Hypertension 继发性高血压? High blood pressure that is caused by another medical condition( 医疗条件) or medication( 药物). ? 5-10% Signs And Symptoms Treatment 14 25 3 Precaution 6 Contents Medical Qigong Signs And plications Causes And Pathogenesis Signs And Symptoms Signs And Symptoms ? Potential ? Unnoticed ? The Silent killer ? Headache ? Dizziness ? Shortness of breath ? Blurred vision ? Ear noise or buzzing ? nosebleed ? Fatigue ? Nausea ? Irregular heartbeat Signs And Symptoms Signs And Symptoms ? Most of the time, there are no symptoms. ? About one out of every 100 (1%) people with hypertension is diagnosed with severe high blood pressure (accelerated or malignant hypertension) at their first visit to the doctor.