Postural hypotension, also known as orthostatic hypotension, is a condition which results in a decrease in blood pressure when you sit or stand. This can cause "light-headedness" or "fainting". It occurs more commonly when you are first injured, when you are fatigued, or after any illness. You will have an increased tendency for postural hypotension if your level of injury is at T-6 or above, but it can occur in all spinal cord injured individuals.