Blood pressure and headache

High blood pressure often causes no noticeable symptoms. Headache can accompany a very large pressure rise, but it is also common with dehydration, heat exposure, a viral illness, sinus inflammation, allergies, stress, or poor sleep. The direction matters: headache can occur with high pressure, yet headache alone does not establish the cause.

Record where the pain is, when it began, how severe it feels, and any fever, congestion, vomiting, vision change, or weakness. A reliable reading taken after quiet rest is more useful than a hurried check during pain.

Rest, drink fluids if appropriate, and check your blood pressure using a validated monitor with your arm supported. Take repeat readings after resting and write down the values, time, symptoms, and medicines. Continue prescribed treatment unless your clinician gives different instructions.

Arrange review for recurring headaches, a new pattern, or readings that remain above your personal target. A clinician can consider common causes such as Common Cold, Allergic Rhinitis, or Chronic Sinusitis.

Seek emergency help for a sudden severe headache, new weakness or numbness, trouble speaking, confusion, seizure, fainting, severe vision change, chest pain, or breathlessness. Get prompt care for headache with high fever, stiff neck, repeated vomiting, or a recent head injury.

Ask how to measure at home, what reading should prompt a call, whether a medicine or illness may be contributing, and whether your headache pattern needs examination.