What Is a Spinal Stroke?
Rare But Dangerous, Spinal Strokes Can Lead to Paralysis and Even Death
Updated March 2023
Similar to strokes that occur in the brain, spinal strokes occur when blood flow to the spine is blocked. When the spinal cord doesn't receive enough blood, it doesn't get enough oxygen and nutrients, damaging or even killing the cells in the spinal cord. While rare — they account for just 0.3% to 1% of all strokes — spinal strokes can lead to paralysis and sometimes death if not treated quickly.
A common first symptom of spinal strokes can be neck and arm pain.— Babak S. Jahromi, MD, PhD
“A common first symptom of a spinal stroke can be neck and arm pain, followed by weakness, numbness or even paralysis. However, symptoms may vary based on what part of the spine is affected by the stroke,” explains Babak S. Jahromi, MD, PhD, a neurosurgeon at Northwestern Medicine. “Symptoms will usually appear rapidly, over the course of minutes or hours.”
Blood flow to the spine can be affected by:
- A blood clot
- Narrowing of arteries from plaque buildup, which can be caused by:
- High levels of bad cholesterol
- High blood pressure (hypertension)
- Smoking
- Diabetes
- Other vascular risk factors
- Bleeding into the spinal cord, which can be caused by:
- High blood pressure
- A spinal vascular malformation (an abnormal connection between spinal arteries and veins)
- A spinal aneurysm (a bulge representing an area of weakness in the wall of an artery)
Long-term effects of spinal strokes include:
- Physical weakness or paralysis
- Loss of sensation in arm or leg
- Difficulty walking or using hands
- Difficulty with breathing
- Pain
- Urinary or bowel incontinence
- Sexual problems
- Mental health issues, including depression
If you or someone you know is showing signs of a stroke, call 911 immediately. The time that passes before getting care is a major factor in how much damage a stroke will do to the brain.