High blood pressure is an asymptomatic disease. In most cases, elevated blood pressure values do not produce specific symptoms, meaning that many people are unaware they have hypertension until it is detected during a medical check-up, before surgery, or while being assessed for another condition.
In most cases, symptoms appear when blood pressure reaches very high readings, during a hypertensive crisis, or when complications affecting target organs such as the heart, brain, kidneys or arteries develop.
In these cases, symptoms may include:
Severe headache. Although some people link headaches (cephalea) to high blood pressure, they are not usually caused by high blood pressure itself. In fact, factors such as pain, stress and anxiety can lead to short-term rises in blood pressure.
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Substantiated information by:
Carol Fernández SoutoInternal Medicine and Systemic Diseases DepartmentNursing Care Coordinator
Constanza Sepúlveda GallardoGeriatricianInternal Medicine and Systemic Diseases Department
Cristina Benítez CalvoAdvanced Practice Nurse in Arterial Hypertension and Vascular RiskInternal Medicine and Systemic Diseases Department
Cristina Sierra BenitoMedical InternistInternal Medicine and Systemic Diseases Department
Miguel Camafort BabkowskiMedical InternistInternal Medicine and Systemic Diseases Department
Published: 20 February 2018
Updated: 18 August 2026
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