Near syncope is a sense of impending LOC or weakness, occurs more frequently, and provides valuable diagnostic clues, since the patient usually has better recollection of the event. Frequency of causes. Causes of Syncope and Near Syncope Cardiac and circulatory. It occurs when a susceptible person is confronted with a stressful situation. Occasionally, mild clonic seizures occur, but a seizure work-up is not indicated unless other signs point in this direction.
Spells are brief in duration with prompt recovery on recumbency.
These episodes may be recurrent. Orthostatic hypotension is a fall in BP when one is assuming an upright position. Primary or secondary. Diabetes most common form of secondary autonomic neuropathy, whereas advanced age is a common cause of primary autonomic failure. IHSS, aortic stenosis, mitral stenosis, pulmonic stenosis, and subclavian steal syndrome.