do you fell palpation when seizure attack，make sure it is not caused by arrhythmia.rthostatic hypotension, also known as postural hypotension,[1] occurs when a person's blood pressure falls when suddenly standing up from a lying or sitting position. It is defined as a fall in systolic blood pressure of at least 20 mm Hg or diastolic blood pressure of at least 10 mm Hg when a person assumes a standing position. It occurs predominantly by delayed constriction of the lower body blood vessels, which is normally required to maintain an adequate blood pressure when changing position to standing. generally speaking， when you stand up too fast, you lose your sight and feel faint for a few seconds
