Low diastolic blood pressure can be a serious condition that requires immediate medical attention. Here are some key points about low diastolic blood pressure: **Causes** * Certain medications, such as diuretics, antidepressants, and erectile dysfunction medication * Medical conditions, including pregnancy, anemia, heart conditions, thyroid and adrenal issues, severe infections, and severe allergic reactions * Lack of vitamin B12, iron, and folate in the diet **Symptoms** * Fatigue or dizziness * Low blood pressure can cause a rapid heartbeat, weak pulse, and pale skin * Symptoms may worsen over time if left untreated **Treatment** * If low diastolic blood pressure is caused by medication, your doctor may adjust your dosage or change your prescription. * Lifestyle changes can help, including exercise, maintaining a healthy weight, and refraining from smoking. * Adding more sodium to the diet may help raise blood pressure. * Wearing compression socks or stockings can improve circulation and reduce pooling of blood in the legs. * Staying hydrated by drinking enough water prevents dehydration, which reduces blood volume. **Complications** * Falls: low diastolic blood pressure can cause fatigue or dizziness, leading to falls, especially in older adults with brittle bones. * Heart problems: low diastolic blood pressure can cause stiffening of the heart, increasing risk for diastolic heart failure. Fluid can back up in the lungs. **When to see a doctor** * Routinely get your blood pressure checked, especially as you get older. * Consult your doctor if you have symptoms of low diastolic blood pressure or if you're taking medication that's causing low blood pressure.