This was not a smooth process. The rise of executive power sometimes hurt important interests and always rubbed against the republican sensibilities that Americans inherited from the founders. From time to time, Congress reaped political benefits from thwarting the president. But today Congress reacts rather than leads.
1 Dehydration can sometimes cause blood pressure to drop. 2  However, dehydration does not automatically signal low blood pressure. 3  Fever, vomiting, severe diarrhea, overuse of diuretics and strenuous exercise can all lead to dehydration, a potentially serious condition in which your body loses more water than you take in.
Abnormally low blood pressure may be associated with a number of different causes, such as: 1  vasovagal syncope (the common type of fainting brought on by stress or pain); 2  hypoaldosteronism (deficiency of a steroid hormone produced by the adrenal glands, as can occur with Addison's disease); and. 3  Parkinsonâs disease.