have you ever had your blood sugar checked? you may be hypoglycemic.
at times i feel light headed jittery shakes tingely all over cold sweats. i experience this usually when sitting. i am afraid to stand up while feeling this for fear of passing out. i have experienced this in church as well as at home while sitting. could be any time of day. sometimes experience this after strenuous exercise such as mowing the grass on a hot summer afternoon