Chilblains are itchy, inflamed areas of skin that can occur after exposure to cold, especially during rewarming. They commonly affect the toes and feet. They are not frostbite, in which tissues can freeze, but chilblains can still be painful and sometimes lead to broken skin or infection.
Chilblains are more likely after feet have been exposed to cold, damp conditions and then warmed rapidly. Small blood vessels near the skin may not adjust smoothly to the temperature change, causing inflammation. Risk can be greater with poor circulation, diabetes, certain autoimmune conditions, or a history of chilblains.
Recognising Chilblains
Chilblains often appear within hours of cold exposure. They may cause red, purple, blue, or darker patches; itching, burning, tenderness, swelling, or pain during warming. Occasionally, blisters or cracks develop. On darker skin tones, swelling, itching, or a changed texture may be more noticeable than redness.
Many mild cases improve within one to three weeks when protected from further cold. However, circulation problems, infection, inflammatory conditions, and injuries can look similar, so not every painful or discoloured toe is a chilblain.
Rewarm Feet Gradually and Gently
The first priority is to get out of the cold and keep the feet dry. Rewarm them slowly at room temperature or with loose, warm socks and blankets. Gradual warming is important: direct intense heat can make symptoms worse and can burn skin that is numb or has reduced sensation.
Avoid placing cold feet directly against a radiator, heater, heat pack, hot-water bottle, fire, or very hot water. Do not use a hairdryer on the feet. These methods can cause burns without the person realising it, particularly when diabetes, nerve damage, or circulation problems are present.
Instead, remove damp shoes and socks, dry the feet carefully, and put on soft, dry socks. If possible, warm the whole body with layers and a warm drink rather than trying to heat the feet quickly. Gentle movement, such as walking around indoors when comfortable and safe, may help restore warmth. Avoid rubbing or massaging affected skin vigorously, as this may irritate already inflamed tissue.
Relieving Symptoms Safely
The itch and burning of chilblains can be tempting to scratch, but scratching can break the skin and increase the chance of infection. Keep fingernails short and consider covering the area loosely with a soft sock if scratching happens unconsciously.
Keeping feet comfortably warm, avoiding further cold, and resting them when painful may help. A cool, clean compress may soothe itching, but avoid ice. Ask a pharmacist or clinician whether pain relief or creams are appropriate, particularly during pregnancy, with other medicines or medical conditions, or if the skin is damaged.
Skin Care and Protecting Damaged Areas
Inspect the feet daily while chilblains are healing. Wash gently with lukewarm—not hot—water, then pat dry thoroughly, including between the toes. Avoid harsh soaps, exfoliants, and fragranced products if the skin is sore or cracked.
A plain, fragrance-free moisturiser may help protect dry, intact skin. Apply it gently rather than rubbing hard. If skin is open, blistered, weeping, or ulcerated, seek professional advice rather than relying on home treatment. Do not pop blisters. If a blister breaks, keep the area clean, protect it with an appropriate non-stick dressing, and ask a pharmacist or clinician about suitable care.
Watch for infection, including increasing redness or discolouration, warmth, swelling, worsening pain, pus, a bad smell, red streaks, or fever. Infection needs prompt medical assessment.
Footwear and Preventing Further Episodes
Prevention is often the most useful strategy. Wear warm, dry footwear before going outside rather than waiting until the feet become cold. Choose weather-appropriate shoes or boots that are roomy enough for warm socks and not tight around the toes. Tight shoes can restrict circulation and trap moisture.
Layered socks can work well. Moisture-wicking inner socks with a warm outer layer may be useful in cold weather; change them promptly if they become damp. Avoid walking barefoot on cold floors, and use slippers indoors if needed. Waterproof footwear can help in wet conditions, but it should be breathable enough to reduce sweating.
When coming in from the cold, avoid sudden temperature changes. Remove wet footwear, dry the feet, and let them warm gradually. Planning ahead—such as carrying spare socks—can make this easier.
Lifestyle Measures That Support Circulation
Keeping warm and active may reduce exposure-related symptoms. Dress in layers, heat the home adequately if possible, and take regular movement breaks. Gentle exercise supports circulation but is not a guaranteed treatment.
Smoking and nicotine narrow blood vessels and impair circulation, so stopping is important for foot health. A balanced diet, adequate hydration, and management of long-term conditions support general health but are not cures for chilblains.
When to Seek Medical Advice
Arrange a medical assessment if chilblains are persistent, recurrent, severe, atypical, or not improving with sensible self-care. Seek help sooner if they are blistered, ulcerated, infected, or very painful. People with diabetes, poor circulation, reduced sensation in the feet, immune suppression, or a known vascular condition should contact a clinician promptly rather than self-treating.
A clinician may examine circulation and skin sensation, consider whether another condition could be responsible, and discuss treatment options. In selected cases, prescription medicines that affect blood vessels may be considered, but these are not suitable for everyone, and their benefits and risks require individual assessment. Do not start, stop, or borrow medicines for chilblains without advice from a clinician or pharmacist.
Seek urgent care for signs of serious circulation trouble, such as a foot or toe becoming very pale, blue, black, cold, numb, or severely painful; rapidly spreading redness; fever; or a wound that is worsening.
Chilblains in the feet are usually managed by protecting the skin, keeping the feet dry and comfortably warm, and avoiding repeated cold exposure. Rewarm gradually, never with direct intense heat, and resist scratching. Warm footwear, dry socks, avoiding nicotine, and prompt attention to broken or infected skin can reduce complications. If symptoms are severe, unusual, persistent, recurrent, or occur alongside diabetes or poor circulation, seek medical advice.