Dear friends with psoriasis, during heavy snow and very cold temperatures, a cold not only makes you feel unwell but may also trigger or worsen skin lesions. As a dermatologist, today I’ll share targeted tips for preventing colds.

First, keep warm and avoid getting chilled. When going out, be sure to wear a hat, scarf, gloves, and other warm clothing, paying special attention to protecting the head and respiratory tract to reduce direct stimulation from cold air; when there is a large indoor–outdoor temperature difference, do not remove your coat immediately upon entering—adapt gradually to the temperature change to avoid sudden vasoconstriction that can precipitate a cold.

Secondly, strengthen your own immunity. Eat more foods rich in vitamin C and protein, such as fresh fruits and vegetables, lean meat, and eggs, to help the body resist viruses; ensure 7–8 hours of sleep each day and avoid staying up late which depletes immunity. When the weather is good, engage in appropriate indoor activity.

Finally, reduce the risk of infection. Try to avoid crowded, enclosed places as much as possible; wash your hands promptly after returning from outside; keep indoor spaces ventilated and consider using a humidifier to avoid dry air that can irritate the respiratory tract. If prodromal symptoms of a cold appear, promptly drink more water and rest, and consult a doctor if necessary to prevent the illness from affecting psoriasis.