Allergic diseases refer to the strong local or systemic reactions that occur after a certain allergen stimulates the organism through various routes such as inhalation, ingestion, injection, and contact, causing various functional disorders or tissue damage. In recent years, influenced by the development of industrialized society, modern lifestyle changes and other factors, the incidence of allergic diseases is growing year by year, and now in the summer, is also the high incidence of allergic diseases such as eczema, urticaria, solar dermatitis, etc., so be alert to the occurrence of allergic diseases in summer should be paid more and more attention! Common causes and their prevention: 1, sun exposure: solar dermatitis is caused by light, occurring in exposed areas of allergic diseases, when the skin is exposed to light to form antigenic substances, sensitizing the body, resulting in allergic reactions. It is recommended that summer should not stay too long in the bright light, take measures to avoid light, wear a sun hat or apply some sunscreen, etc. 2, mosquito bites: such as bedbugs, fleas, lice, mites, mosquitoes and other insects bite the skin after the injection of saliva, triggered by allergic reactions. Summer temperature and humidity is very favorable to the growth and reproduction of mites. Therefore, use bed covers in summer and avoid using fluffy blankets and silk sheets; use wood or plastic products instead of padded furniture; and try not to use carpets or choose carpets with shorter hairs. Accelerate indoor air circulation and reduce indoor air humidity can also kill microscopic dust mites. 3, air conditioning pollution: With the popularity of air conditioning, there are many people suffering from allergic rhinitis and asthma in summer. Air conditioning makes germs and dust will be blown out and spread to every corner of the room. These pollutants in contact with the body will cause itching, rash, flaking, allergies and other skin diseases, into the respiratory tract will cause nasal congestion, sneezing, asthma and other respiratory diseases, becoming a summer indoor health invisible killer. Due to the use of air conditioning indoor and outdoor temperature difference, but also prone to cold air allergy symptoms. Therefore, it is important to clean the air conditioner properly. Many people tend to think that cleaning the air conditioner is to rinse the filter with water to cut off the source of pollution, and some even use it directly without cleaning. Due to the special structure of the air conditioning fins, only by wet cloth wipe, brush cleaning and other means can not be thoroughly sterilized, and easy to wear the surface of the fins, affecting the effectiveness of the use of air conditioning. In fact, cleaning the air conditioning heat sink is not difficult, just buy a professional air conditioning disinfectant, through a few simple steps can easily sterilize, and can dissolve a variety of carcinogens on the heat sink. 4, food allergies: food is an important allergen that triggers allergies. Sea fish and some other seafood is often an important factor in triggering allergic dermatitis, eczema, hives. Many people will experience skin redness, rash, itching, and wind clumps after eating sea fish, especially scallops and rhubarb. Patients with allergies should pay attention to a balanced diet of nutrients and consume less oily, sweet and stimulating foods, tobacco and alcohol. Eating more vitamin-rich foods can enhance the body’s ability to rabbit epidemic. Allergy sufferers can eat more foods with anti-allergic function to strengthen the defense ability of the skin. According to nutritionists, onions and garlic contain anti-inflammatory compounds that can prevent the onset of allergies. There are also a variety of vegetables and fruits that can fight allergies, with broccoli and citrus being particularly effective. Because it is rich in vitamin c, which is a natural antihistamine, if the daily intake of 1,000 mg from the diet, it is enough to prevent the emergence of allergies. 5, pollen and other allergies: summer pollen, some people are allergic to pollen and other allergies, for allergic people should be reduced to go out. 6. Other: With longer days and hot weather in summer, people often have short sleep time and poor sleep quality, which can also lead to allergies that do not heal over time. In addition, allergies, family history, genetic factors, age and so on can affect the occurrence of allergic diseases. Finally, once the symptoms of allergy appear, it is important to seek medical treatment in a timely manner. Although general medication cannot achieve a complete cure, but can only relieve the symptoms and reduce the onset time, it can control the symptoms to avoid the prolongation of the disease. In recent years, specific immunotherapy, i.e. desensitization therapy, is the only method recognized by the World Health Organization as the only possible way to treat allergic diseases at the root. In addition, Chinese medicine “acupressure” also has a certain preventive effect and is becoming more and more popular!