![]() ![]() They also include certain nervous system disorders, such as Parkinson's disease. Diseases that can increase the risk of low blood pressure include some heart conditions, such as heart valve problems, heart attack and heart failure. Other medications that can increase the risk of orthostatic hypotension include medications used to treat Parkinson's disease, certain antidepressants, certain antipsychotics, muscle relaxants, medications to treat erectile dysfunction and narcotics. These include medications used to treat high blood pressure or heart disease, such as diuretics, alpha blockers, beta blockers, calcium channel blockers, angiotensin-converting enzyme (ACE) inhibitors and nitrates. ![]() It also can be harder for an aging heart to speed up to make up for drops in blood pressure. Special cells (baroreceptors) near the heart and neck arteries that control blood pressure can slow as you age. Orthostatic hypotension is common in those who are age 65 and older. The risk factors for orthostatic hypotension include: This condition is more common in older adults. Some people have low blood pressure after eating meals (postprandial hypotension). Some nervous system disorders, such as Parkinson's disease, multiple system atrophy, Lewy body dementia, pure autonomic failure and amyloidosis, can disrupt the body's ability to control blood pressure. So can diabetes, which can damage the nerves that help send signals that control blood pressure. ![]() Thyroid conditions, adrenal insufficiency (Addison's disease) and low blood sugar (hypoglycemia) can cause orthostatic hypotension. These conditions prevent the body from quickly pumping more blood when standing up. Some heart conditions that can lead to low blood pressure include extremely low heart rate (bradycardia), heart valve problems, heart attack and heart failure. Mild dehydration can cause symptoms of orthostatic hypotension, such as weakness, dizziness and fatigue. Fever, vomiting, not drinking enough fluids, severe diarrhea and strenuous exercise with a lot of sweating can all lead to dehydration. Many conditions can cause orthostatic hypotension, including: Orthostatic hypotension occurs when something interrupts the body's process of dealing with the low blood pressure. These cells also narrow the blood vessels and increase blood pressure. This tells the heart to beat faster and pump more blood, which evens out blood pressure. The baroreceptors send signals to the brain. Usually, special cells (baroreceptors) near the heart and neck arteries sense this lower blood pressure. Blood pressure drops because there's less blood flowing back to the heart. When standing from a sitting or lying position, gravity causes blood to collect in the legs and belly. ![]()
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