When the weather is hot and cold, what is the symptom of growing red spots on your body?

Most of them are allergies. I have one, too. Actually, many people do. You need not worry too much. If you really care, go to the hospital and prescribe some desensitizing drugs. It is recommended to go to the hospital, listen to the doctor's advice and pay attention to your living habits. This is very important. You must find out what you are allergic to and avoid contact in your later life.

The common causes of urticaria are: ① Fish, shrimp, crab and eggs are the most common foods. Secondly, some spices and condiments can also cause. ② Drugs, many of which can cause the disease. Penicillin, sulfonamides, furazolidone, serum vaccine, etc. Urticaria is often caused by immune mechanism. Aspirin, morphine, atropine and vitamin B 1 are histamine releasing substances, which can directly cause mast cells to release histamine and cause urticaria. ③ Infection: including viruses (such as infectious viruses and hepatitis viruses), bacteria (such as golden grapes), fungi and parasites (such as roundworms). ④ Animal and plant factors, such as insects biting or inhaling pollen, feathers, dander, etc. ⑤ Physical factors, such as cold and heat, sunlight, friction, pressure, etc., can be caused. In addition, gastrointestinal diseases, metabolic disorders, endocrine disorders and mental factors can also be caused.

Remember to see a doctor!