What causes high diastolic blood pressure at night?
Elevated diastolic blood pressure at night may be caused by physiological factors or pathological conditions, such as medication side effects or early signs of hypertension. The specific analysis is as follows:
I. Physiological Factors
Excessive mental stress at night, consuming too much alcohol during dinner, or eating foods high in sodium may lead to blood vessel constriction or increased fluid volume within blood vessels.
II. Pathological Factors
1. Medication Side Effects
Taking nonsteroidal anti-inflammatory drugs (NSAIDs) before bedtime—such as ibuprofen sustained-release capsules, celecoxib capsules, or acetaminophen tablets—without following medical advice or using improper dosages may trigger adverse drug reactions, leading to elevated nighttime diastolic pressure.
2. Early Signs of Hypertension
This may result from being significantly overweight, chronic alcohol consumption, genetic predisposition, or other factors that cause prehypertensive symptoms. Additional symptoms may include fatigue, headache, and palpitations.
Besides the above common causes, hyperthyroidism cannot be ruled out as a potential contributor. It is recommended to seek medical evaluation at a hospital to determine the exact underlying cause and receive appropriate treatment.