If a person experiences a drop in blood pressure, fever, diarrhea, loss of hydration from vomiting or dizziness, lightheadedness can occur. Further, if the brain does not receive enough blood, it can cause lightheadedness as well.

Hypotension occurs when blood pressure is much lower than normal. Low blood pressure can be dangerous, especially if it is a chronic issue, because the brain, heart and other organs do not get enough blood and oxygen to function as they should.

Hypertension patients don’t have to forgo remedies for hay fever or perennial allergy symptoms in order to maintain a safe blood pressure. Bouts of allergic rhinitis compromise respiratory health and comfort. Treating allergy symptoms removes this physical stress that may add to hypertensive conditions.

Blood vessels -- your arteries, veins and capillaries -- are responsible for carrying blood throughout the body. When blood vessels are dilated, or opened, more blood can be carried through the body, which improves oxygen and nutrient delivery and often results in lowered blood pressure.

Low blood pressure is also called hypotension. Those who experience low blood pressure are at risk for symptoms that can lead to life-threatening conditions. Dizziness or fainting may mean that there is an underlying endocrine condition, heart or neurological disorder.

Low blood pressure sometimes occurs after exercise -- a condition called postexercise hypotension. This condition may last for a few minutes or as long as 13 hours. Postexercise hypotension is caused by a temporary decrease in blood flow to the area of the brain that controls your blood pressure.

Blood pressure is the measure of the force that blood exerts on the walls of the blood vessels.

A warm glass of salt water remains a classic, all-natural home remedy to cope with a sore throat or toothache. Yet people with high blood pressure may be concerned about the sodium content in these solutions.

A body temperature below 101 degrees Fahrenheit or 38.3 degrees Celsius in children is considered a low grade fever. This parameter is usually accurate when the temperature is measured with a rectal thermometer.

The heart keeps approximately 5 liters of blood pumping throughout the body, according to the Franklin Institute. Doctors can determine the health of the heart and blood vessels by measuring the blood pressure—the force the blood exerts on the walls of the blood vessels.

Alcohol's effects on blood pressure depends on a number of factors, including gender, age, health, body weight, family history and his history of alcohol intake. (Ref.

While iron levels can impact the levels of hemoglobin in your blood, iron does not seem to have any direct impact on your blood pressure. Preliminary research has suggested that a connection can be made, but there is currently no solid scientific evidence that low iron can influence your blood pressure.