Nursing care
Pounding headache after a spinal cord injury: what the nurse does first
Written and reviewed by Emily Thompson, BSN, RN, CCRN · 4 min read · Updated October 2026
Short answer
Sit the client upright straight away. A severe pounding headache in someone with a spinal cord injury at about T6 or above suggests autonomic dysreflexia, a dangerous blood pressure surge. Sitting up lowers pressure, then loosen tight clothing, check blood pressure frequently and search for the trigger, most often a full bladder or bowel. Medication follows if pressure stays high.
First action: sit the client up
The first action is to raise the head of the bed and sit the client upright, lowering the legs if possible. A severe, pounding headache with flushing or sweating above the level of injury in a client with an injury at about T6 or above points to autonomic dysreflexia. Sitting up uses gravity to pool blood in the legs and bring the blood pressure down.
This is a circulation and safety priority. The sudden rise in blood pressure can cause a stroke or bleeding in the brain, so the nurse treats the pressure before anything else. Lying the client flat or leaving them supine is the wrong direction, because it removes the one immediate measure that lowers pressure without equipment or medicine.
Loosen, measure and look for the trigger
Next, loosen or remove anything tight, such as clothing, abdominal binders, leg bag straps or compression stockings. Check the blood pressure every few minutes and compare it with the client's usual baseline, which is often low after a high injury. A reading that looks only moderately raised may be a large rise for this client. The pulse may be slow at onset.
Then find and remove the trigger. Bladder and bowel distension are the most common causes, so check that the catheter is draining and not kinked, clamped or blocked, and consider retention if there is no catheter. If the bladder is not the cause, assess for a full rectum, using anaesthetic lubricant per protocol. Pressure areas, tight shoes, ingrown toenails and menstruation are other possible triggers.
When medication comes in, and what can be delegated
Antihypertensive medication is a second-line step. Local guidance describes giving a fast-acting medicine if the systolic pressure stays high after the client is positioned and the trigger is sought. The nurse notifies the provider and follows the facility protocol rather than waiting for a callback before sitting the client up and checking the bladder.
An assistant can help reposition the client, fetch a bladder scanner or catheter supplies, and stay to support the client. Interpreting the blood pressure trend, deciding on catheter or bowel assessment and giving medication remain nursing responsibilities. After the episode resolves, continue monitoring for some time, as pressure can fall too low once the trigger is removed.
Worked scenario: headache and a quiet catheter bag
Hypothetical practice question: a client with a C6 spinal cord injury suddenly reports a pounding headache and blurred vision. The face is flushed and sweaty, and the blood pressure is much higher than baseline. Which action should the nurse take first? Options: lower the head of the bed; check the urinary catheter for kinks; give the prescribed antihypertensive; sit the client upright.
Sitting the client upright is correct because it lowers blood pressure immediately while the cause is found. Checking the catheter is the right next step and is very tempting, but positioning comes first because it is quicker and protects the brain. Lowering the head raises pressure further. Medication is reserved for pressure that stays high after these measures.
Why the tempting distractors are wrong
A pain reliever for the headache treats the symptom while the dangerous pressure persists, so it misses the emergency. Waiting to recheck the blood pressure later is unsafe, because this rise can be sudden and severe. Leaving the client to find a provider wastes time that should go into positioning and checking the bladder.
Another trap is treating the reading as mild because it looks normal for most adults. People with high cord injuries often have a low resting pressure, so the comparison that matters is with their own baseline. Some clients have few symptoms despite a dangerous rise, which is why a blood pressure check is part of any new headache in this group.
Sources and further reading
Autonomic dysreflexia, Royal National Orthopaedic Hospital NHS Trust. At-risk injury levels, pounding headache, flushing above the lesion, bradycardia at onset, bladder and bowel triggers, sitting up, loosening clothing, frequent blood pressure checks, medication if pressure stays high, monitoring afterwards.
Autonomic dysreflexia, MedlinePlus. Symptoms including throbbing headache and sweating, that it can be silent, risk of stroke or brain bleeding, sitting up and removing tight clothing.
The next step on this is the same as on everything else here: answer questions and read the rationales. Our neurological practice questions are the closest set to what this page covers.
Common questions
Which spinal cord injuries carry a risk of autonomic dysreflexia?
Injuries at about T6 or above carry the main risk, because the nerves controlling blood vessels in the gut lose regulation from the brain. Some sources note cases at slightly lower levels. Nurses caring for clients with high injuries should treat a sudden severe headache as possible dysreflexia until assessed.
Why is the bladder checked before the bowel?
Bladder distension is the most commonly cited trigger, and checking a catheter for kinks, clamps or blockage is quick and non-invasive. Bowel checks involve rectal examination, which can itself worsen the stimulus, so protocols advise using anaesthetic lubricant and moving to the bowel if the bladder is not the cause.
Why does the pulse slow when blood pressure rises?
The body's pressure sensors detect the surge and the brain slows the heart through the vagus nerve, which still works above the injury. The brain's signals to tighten or relax blood vessels cannot pass the injured cord, so the slowing pulse does not bring the pressure down. A slow pulse is described at onset, though the rate can vary.