Fainting

Low Blood Pressure
Hypotension is low blood pressure. Your blood pushes against your arteries with each heartbeat. The pushing of the blood against the artery walls is called blood pressure. Low blood pressure is good in most cases. Sometimes, however, low blood p  More »
HLCMS

Heart Disease
The heart, which is about the size of a human fist, is the body's largest, strongest, and most important muscle. The heart continuously pumps blood through the body, helps regulate and prolong health, and controls the flow (circulation) of blood t...  More »
Gale Nutrition and Well-Being A to Z

Dehydration
Dehydration takes place when your body loses more fluid than you drink. The most common cause of water loss from the body is excessive sweating. The suggested amount of water to drink is eight to 10 glasses per day for an average, non-active per  More »
HLCMS

Hyperventilation
Hyperventilation is a condition in which you suddenly start to breathe very quickly. Healthy breathing occurs with a healthy balance between breathing in oxygen and breathing out carbon dioxide. While hyperventilating, you upset this balance by e  More »
HLCMS

Low Blood Sugar
Hypoglycemia is a condition characterized by low blood sugar, or abnormally low levels of glucose in the blood.  More »
Gale Encyclopedia of Children's Health

History and Physical Exam
The health status of populations and of individuals is assessed for many reasons. Assessing needs for care helps guide the allocation of resources— diagnostic assessments guide treatment, prognostic assessments contribute to planning, and assessin...  More »
Gale Encyclopedia of Public Health