Why an arm or leg feels cold after a stroke
An arm or leg on the side affected by a stroke often feels cold, and may measure colder, because the stroke disrupts the nerve signals that control blood vessel tone in that limb, reducing skin blood flow. Sensation can also change, so the limb may feel cold yet not sense heat. Warm it gently with layers, and never put direct heat on it.
Why does my arm feel cold after a stroke?
A 2025 review in the Journal of International Medical Research describes lower skin temperature on the stroke-affected side than on the unaffected side, particularly in the feet. It explains that damage to higher brain centers weakens the normal brake on the sympathetic nervous system. The result is abnormal sympathetic activity, tighter blood vessels, less blood flow to the skin and a cooler limb.
The same review notes these symptoms often appear months after the stroke, not right away, and cites temperature differences between sides as large as 6 to 10°C in some cases. So a cold arm or foot that develops during recovery is a recognized pattern, not something you imagined.
Is it feeling cold, or actually being cold?
It can be either, or both. Some limbs are measurably cooler because of reduced blood flow. Separately, a stroke can change sensation. The Stroke Association (UK) explains that some people become less sensitive to temperature, which puts them at risk of burning themselves or becoming too cold.
Researchers who studied 86 stroke survivors in Scientific Reports (2021) note that loss of touch and other sensation is commonly reported after stroke. In that study, sensation and skin temperature of the foot did not track each other in a clinically meaningful way, so what the person feels is not a reliable guide to how warm the limb is.
| What is happening | What it feels like | Practical response |
|---|---|---|
| Reduced skin blood flow on the affected side | Hand or foot looks pale or feels cool to others' touch | Extra layer on that limb: a glove, sock or sleeve |
| Reduced temperature sensation | Does not notice heat or cold properly | Test water with the unaffected hand; no direct heat |
| Altered or painful sensation | Cold, burning or unpleasant feelings not matching the temperature | Tell the stroke team; they can assess and advise |
| Weakness or paralysis | Limb rests in one position for long periods | Support and reposition it; keep it covered |
Why does my foot feel cold after a stroke?
The 2025 review found the temperature drop on the affected side was often most marked in the feet. Feet are also farthest from the core and often rest on cold floors, so an affected foot can feel very cold even indoors.
Warm socks, slippers with insulated soles and a footrest off a cold floor help. Check the foot daily for redness, color change or sores, since reduced sensation can hide an injury.
How can you warm a cold arm or leg safely?
The priority is keeping heat in, not adding concentrated heat to a limb that may not feel it.
Layer the affected limb: a glove or mitten, a sleeve or arm warmer, warm socks, and a lap blanket.
Keep the room comfortably warm and avoid resting the limb against cold windows, walls or metal.
Support the arm on pillows as Johns Hopkins describes, and avoid pulling on the affected arm when helping someone move.
Move and reposition the limb as advised by the physical or occupational therapist.
Test bath, shower and dishwater with the unaffected hand, as the Stroke Association advises.
Ask an occupational therapist about protecting skin that has lost heat or pain sensation.
Are heating pads and heated gloves safe after a stroke?
They carry real burn risk. Johns Hopkins notes you may not have proper feeling in the arm and shoulder, and that it is easy to damage the arm without knowing it. The Stroke Association warns that reduced temperature sensitivity raises the risk of burns.
Heating pads, electric blankets, hot water bottles, air-activated hand warmers and heated gloves can all burn skin a person cannot feel. If any are used, keep them off bare skin, use the lowest setting and a timer, never use them while sleeping, and have a caregiver check the skin afterward. Retaining body heat with layers and insulation is the safer default.
When to call a clinician or emergency services
Talk to your clinician or stroke team about a limb that stays cold, changes color or becomes painful. A cold limb alone is not a stroke sign, but any sudden new symptom needs immediate action. The American Stroke Association uses F.A.S.T. to spot a stroke; call 911 at once and note the time symptoms began.
| Warning sign | What to do |
|---|---|
| F: Face drooping. Does one side droop or feel numb? | Call 911 immediately |
| A: Arm weakness. Is one arm weak or numb? | Call 911 immediately |
| S: Speech difficulty. Is speech slurred or hard to understand? | Call 911 immediately |
| T: Time to call 911, and note when symptoms started | Call 911 immediately |
| Sudden loss of balance, vision changes, numbness or weakness on one side, confusion, trouble understanding speech, or severe headache with no known cause | Call 911 immediately |
| Redness, blisters or wounds on a limb with reduced sensation | Stop any heat source and contact the clinician |
Key takeaways
A cold arm or leg on the affected side is a recognized effect of stroke, often appearing months later.
Disrupted nerve control of blood vessels reduces skin blood flow, especially in the feet.
Temperature sensation can also change, so the limb may not sense heat that could burn it.
Keep heat in with layers and a warm room; avoid direct heat on skin that cannot feel properly.
Any sudden new face drooping, arm weakness or speech difficulty means calling 911 at once.
Frequently asked questions
Is it normal for your hand to be cold after a stroke?
Yes, it is a recognized effect. Stroke can disrupt the nerve signals that control blood vessels in the affected limb, reducing skin blood flow and making the hand cooler than the other side. Mention it to the stroke team, especially if it is painful or changing.
Why does my leg feel cold but it is warm to touch?
A stroke can change how the brain processes sensation, so a limb can feel cold, or even burning, without being cold. Changes in sensation should be assessed by the stroke team, who can suggest ways to manage them.
Can a cold arm be a sign of another stroke?
A limb that has felt cold for weeks or months is usually an effect of the original stroke. Sudden new numbness or weakness, especially on one side, face drooping or trouble speaking are stroke warning signs, and you should call 911 immediately.
How long does the cold feeling last after a stroke?
It varies, and there is no fixed timeline. The cold often develops months after the stroke rather than right away. Specialist nerve procedures have been studied for persistent cases, so ask the stroke team if it affects daily life.
Should I use a heating pad on my affected side?
Only with great care, because reduced feeling makes burns much more likely. Layers, gloves, socks and a warm room are safer. If you do use heat, keep it off bare skin, use a timer and check the skin afterward.
Related reading
Sources
Post-stroke hemiplegic limb cold sensation and sympathetic nervous regulation: A review (Yu et al., 2025), Journal of International Medical Research (PMC)
Changes in sensation, Stroke Association (UK)
Arm Care After a Stroke, Johns Hopkins Medicine
Body temperature and esthesia in individuals with stroke (Dias et al., 2021), Scientific Reports
Stroke Symptoms, American Stroke Association
About HEATJAC. HEATJAC is a thermal architecture company founded by an anesthesiologist. We design patented garment systems that capture, conduct and broaden warmth across the body, and we publish this knowledge hub because the science of staying warm should be public. HEATJAC products are not medical devices and are not intended to diagnose, treat, cure or prevent any disease.