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Causes of high diastolic blood pressure include medical conditions such as hypothyroidism, coarctation and adrenal tumors, according to the American Academy of Family Physicians. High diastolic blood pressure usually has no known cause and tends to run in families.


According to the American Heart Association, diastolic blood pressure refers to the amount of pressure against artery walls between heartbeats or when the heart is at rest. The second number in a blood pressure reading, diastolic pressure is considered normal when it is less than 80.


Athletes and people who are extremely fit tend to have low blood pressure, explains Mayo Clinic. Conditions that can cause low blood pressure include heart issues, such as heart valve problems and heart attack; endocrine issues, such as thyroid disorders, Addison's disease and low blood sugar; and s


According to the Centers for Disease Control and Prevention, systolic blood pressure refers to the pressure blood exerts when the heart beats. Diastolic blood pressure refers to the pressure exerted on the blood vessel walls in between the time the heart beats.


Treatment for low blood pressure may include adding salt to the diet, the infusion of fluids via an intravenous line or medication to treat the underlying cause of the low blood pressure. Low blood pressure is generally only treated if it is causing symptoms or if blood pressure drops rapidly, accor


If someone has high diastolic blood pressure, it does not necessarily mean that they have high systolic blood pressure, notes the Mayo Clinic. It is possible to have isolated high diastolic or isolated high systolic blood pressure.


Systolic blood pressure measures the arterial blood pressure due to contraction of the heart, whereas diastolic blood pressure is a measure of arterial pressure between heart contractions, according to WebMD. A blood pressure cuff is used to make the measurements; systolic pressure is measured first


It is possible for a person to black out after standing suddenly due to low diastolic blood pressure, states MedlinePlus. Many other factors, including medications, can affect the blood pressure in day-to-day lives.


Aging is the primary cause of diastolic heart failure, also called diastolic dysfunction. With time, the heart muscle becomes too stiff, preventing the heart from filling with blood properly. High blood pressure, narrowed opening of the aortic valve, coronary artery disease and pericardial disease a


Diastolic dysfunction is a type of heart failure, notes WebMD. It occurs when the heart contracts in a normal pattern, but the ventricles fail to relax. Stiff ventricles and a heart muscle that doesn't relax prevent the heart from filling up with blood properly.