Dizziness typically encompasses the sensation of being lightheaded and possibly ready to pass out. You may also experience a vertigo-like feeling of spinning. Often the cause of dizziness is related to an abrupt decrease in blood pressure, dehydration or rising too quickly from a prone position. Much less commonly, dizziness may be the result of a serious health problem such as stroke, heart disease, internal bleeding or shock. Typically, however, there will be other accompanying symptoms if one of these issues is the cause. If that is the case, or you find your dizziness is worsening, contact your doctor’s office.