The temperature suddenly dropped, and many people hurriedly dug out thick clothes from their wardrobes to keep warm. However, many people find that they start to experience symptoms like a cold, such as coughing, sneezing, and runny nose, shortly after changing into thick clothes. Why did you catch a cold after wearing too much? Attention! This may be caused by allergies. What "hidden allergens" are hidden in the wardrobe, and how to avoid allergy risks when changing clothes in different seasons? Listen to the doctor's detailed explanation. They are common allergens in the air, such as assassin dust mites, which can easily cause reactions in the skin and respiratory mucosa. In addition, many people are accustomed to putting camphor balls in their wardrobes to prevent insects and moths. But the main component of camphor balls is an organic compound, which itself has a certain degree of toxicity. Especially at high concentrations, contact with the human body can trigger irritant reactions and may also trigger allergic reactions. Its symptoms mainly focus on the respiratory tract, skin, and eyes of the human body. Allergic symptoms vary from person to person. The symptoms of allergic reactions vary from person to person, such as coughing, itchy nose, sneezing, runny nose, itchy throat, etc. Some people may also experience skin itching and eye allergies. The main symptoms of allergies in the eyes are itching and redness. It is recommended that you try not to rub your eyes as rubbing them too hard may cause the skin cells in the eyes to be broken, leading to more inflammatory reactions and increasing itching as you rub them. The condition of the eyes will become more severe. If itching occurs, it is recommended to apply cold compress as soon as possible. If symptoms cannot be controlled, seek medical attention at a hospital. If mild respiratory symptoms occur, such as itching in the throat or nose, salt water can be used to wash the nose and rinse the mouth to reduce the residue of respiratory allergens. If urticaria occurs on the skin, it is generally treated with oral anti allergic drugs, including cetirizine and loratadine; If eczema like dermatitis rash occurs, short-term topical steroids are generally used for treatment. These symptoms require urgent medical attention. Once a serious allergic reaction occurs, it may lead to anaphylactic shock. If the following emergencies occur, seek medical attention immediately. Whole body rash, such as itching and redness all over the body, or the appearance of a lot of hives and wheals; Severe respiratory symptoms, such as wheezing and difficulty breathing; Gastrointestinal symptoms, including obvious abdominal pain and vomiting; More severe allergies may result in increased heart rate, decreased blood pressure, and even fainting. The key to preventing allergies from the source is to avoid allergens from the source. When changing thick clothes in winter, the wardrobe should be cleaned and ventilated for at least 30 minutes. If there is an air purifier, it is recommended to turn on the strong mode to filter dust mite spores and chemical volatiles. If corresponding symptoms appear, it is recommended to seek medical attention at a hospital and have a doctor treat the condition accordingly. (Xinhua News Agency) Wen/Lu Xueyan Peng Rongmei (Peking University Third Hospital)