A heat-induced cold is a summer-damp cold, and a wind-cold cold is a wind-cold cold. Summer cold is also called summer-dampness cold in Chinese medicine, which is different from wind-cold cold and wind-heat cold in winter. Cold-wind cold is mainly caused by feeling the evil of cold. Wind-heat cold is the evil of wind and heat, which is more common in spring. Wet and cold in summer is characterized by sultry summer and high humidity. At this time, everyone is greedy for cold, such as blowing air conditioning and feeling the evil of cold. From the symptoms, the symptoms of cold, wind-heat and summer-dampness are stuffy nose, runny nose and fever. The difference is that wind-cold colds and wind-heat colds mostly occur in autumn, winter and spring and autumn, with mild fever and severe aversion to cold. Summer-damp cold is a unique cold in summer, which is also commonly known as the common cold. There is a difference between fever caused by a cold and a cold in autumn and winter. Severe fever, mild aversion to cold. Generally, patients do not feel cold, but they have fever and sweat a lot, but they do not have a fever. So if you catch a cold in summer, take antipyretics like a cold in winter, the effect will be bad and there will be some side effects. A cold is not contagious. The flu is contagious, while the common cold is not flu and is not contagious. However, colds can induce some diseases, such as chronic bronchitis and asthma. The acute attack of most outpatients has certain inducement, such as cold, fatigue and emotional factors. This has something to do with cold. Banlangen granule is a commonly used Chinese patent medicine. Nowadays, many people take it to prevent or treat colds, but Banlangen granule is only effective for wind-heat colds. Radix Isatidis, the main component of Radix Isatidis granules, is bitter and cold, and has the effects of clearing away heat and toxic materials, cooling blood and relieving sore throat. It has good preventive and therapeutic effects on common diseases such as cold, flu, mumps and measles. However, Radix Isatidis belongs to Chinese medicine for clearing away heat and toxic materials, which is only effective for the "heat toxin" (wind-heat cold) of Chinese medicine, and is not suitable for the symptoms of wet toxin and cold toxin, that is, wind-cold cold cold. Under normal circumstances, the dosage of adult Radix Isatidis granules is 1~2 bags each time, three times a day, and the dosage of children should be reduced accordingly. According to the condition, the dosage can be reduced from half a bag each time to 1 bag, still three times a day. It should be reminded that Radix Isatidis should not be taken excessively, otherwise it will hurt the spleen and stomach, and even have symptoms such as dizziness, chest tightness and skin flushing.