Chilblains - Symptoms, Causes & Treatment
By ScanSkinAI Editorial Team✓ Reviewed for medical safetyLast updated June 2026
Painful, itchy swelling on the skin caused by poor circulation in response to cold. They typically affect toes and fingers and can be prevented by keeping warm.
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Quick Answer
Chilblains, also known as pernio, are painful, itchy swelling on the skin that typically affects your toes and fingers. They develop when your skin is exposed to cold and damp conditions, followed by rapid warming, which causes small blood vessels to expand too quickly. You might notice red or purple patches, a burning sensation, or even blistering. Most chilblains clear up on their own as you gently keep the area warm, but improving circulation and avoiding sudden temperature changes can prevent them from returning.
Symptoms
- Red or purple swelling on toes or fingers
- Burning and itching
- Possible blistering
- Usually appear hours after cold exposure
- Worse when warming up
Causes & Risk Factors
- Cold exposure followed by rapid warming
- Poor circulation
- Damp conditions
- Low body weight
- Raynaud's phenomenon
Treatment & Management
- Keep affected areas warm
- Avoid rapid temperature changes
- Nifedipine for prevention
- Topical steroids for itching
- Improve circulation
When to See a Doctor
If chilblains are severe, recurrent, or don't heal within 1-3 weeks
Frequently Asked Questions
What do chilblains look and feel like?
Chilblains usually appear as small, itchy, red or purple swellings on the extremities, most commonly the toes and fingers. They often develop a few hours after cold exposure. You might also experience a burning sensation, and the itching often becomes worse when you enter a warm room. In more severe cases, the surface of the skin might blister or ulcerate.
Why do I get chilblains out of nowhere?
They typically occur when your skin is exposed to cold temperatures and then warms up too quickly. This sudden change causes the small blood vessels near your skin's surface to expand faster than the nearby larger vessels can handle. The resulting bottleneck causes blood to leak into the surrounding tissue, leading to swelling and irritation. Poor circulation, damp conditions, low body weight, or having Raynaud's phenomenon can increase your risk.
How can I treat chilblains at home?
The most important step is to gently warm the affected areas without using direct heat. Avoid hot water bottles or sitting right next to a radiator, as rapid warming makes symptoms worse. Wear warm, dry clothing like wool socks or gloves. If the itching is intense, an over-the-counter topical steroid cream can provide relief. Do not massage or scratch the swelling, as this can break the skin and cause infection.
How long does it take for chilblains to go away?
In most cases, chilblains will heal on their own within one to three weeks, provided you avoid further exposure to the cold and keep your extremities warm. As the weather improves, they usually stop recurring. However, if you have underlying circulation issues or repeatedly expose your skin to cold, damp conditions without proper protection, they can become a recurring winter problem.
When should I see a doctor for my toes?
You should consult a healthcare professional if your chilblains are severe, do not improve within one to three weeks, or keep coming back. It is also important to seek medical advice if the skin blisters, cracks, or shows signs of infection like pus or increasing pain. If you get them frequently, a doctor might evaluate you for underlying circulation issues and could prescribe medication like nifedipine to help prevent them.
What is the best way to prevent chilblains?
The key to prevention is keeping your core body and your extremities warm at all times. Dress in layers, wear thermal socks, and use insulated, water-resistant footwear during cold, damp weather. Keep your living space comfortably warm and avoid letting your hands or feet get chilled. If your extremities do get cold, warm them up gradually rather than placing them near a heater or in hot water.
Are chilblains the same thing as frostbite?
No, chilblains and frostbite are different conditions. Frostbite occurs when the skin and underlying tissues actually freeze due to extreme cold, causing severe tissue damage. Chilblains, on the other hand, are an inflammatory response to non-freezing cold and damp conditions combined with rapid rewarming, causing temporary blood vessel swelling rather than frozen tissue. While both are cold injuries, chilblains are generally milder.
How can ScanSkinAI help with chilblains?
ScanSkinAI can help you monitor changes in your skin, such as the red or purple swelling on your fingers and toes that might indicate chilblains. Tracking these visual changes can be useful when explaining your symptoms to a doctor. However, please remember that our AI and imaging tools are screening aids only, not a substitute for professional medical evaluation. ScanSkinAI cannot formally diagnose chilblains or prescribe treatments.
Medical References
Information on this page is sourced from and verified against reputable medical resources:
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Medical Disclaimer: This information is for educational purposes only and is not intended as medical advice. The content on this page should not be used to diagnose or treat any health problem. Always consult with a qualified healthcare professional for proper medical evaluation, diagnosis, and treatment of your condition.