Winter Finger Swelling: Is it a sign of danger? Understand Chilblains

• Winter finger and toe swelling, redness, and itching are medically known as 'chilblains' or 'pernio'.
• This occurs when small blood vessels constrict in cold and then rapidly expand upon sudden exposure to heat, causing blood leakage into tissues.
• Individuals with poor circulation, Raynaud's phenomenon, anemia, diabetes, and smokers are at higher risk.
• Symptoms include red/purple spots, tightness, swelling, intense itching, and potentially blisters or sores 12-24 hours after cold exposure.
• Treatment involves gradual warming, moisturizers, and doctor-prescribed creams; prevention includes warm clothing, avoiding sudden heat, and staying active.

Why It Matters: Chilblains cause winter finger/toe swelling due to rapid temperature changes; prevention and gradual warming are key.