Urticaria, or “wind bumps” as they are called, is a common condition. Fifteen to 25 percent of people experience hives at least once in their lives, and the most common causes are food and drug allergies and infections. When it comes to food allergies, people most often think of “hairy things”, such as fish, shrimp, shellfish and other seafood, eggs, milk and beef and lamb, etc. In fact, any food can cause hives, and some of the following foods that you come into contact with on a daily basis often cause hives: chocolate, peanuts, tomatoes, strawberries, watermelon, pork, cheese, garlic, onions, peppers, etc. One might ask if you should pay attention to any diarrhea or constipation in the near future. In the case of abnormal gastrointestinal function, some high-protein foods are more likely to cause allergies. With the development of the food processing industry, people are more exposed to processed finished and semi-finished foods, and perhaps the food additives and preservatives in these foods are the culprits that cause hives. Baking powder, citric acid, eggs and synthetic food coloring are commonly used food additives, and various food additives are commonly used in the production of fermented foods, alcohol, candy, soft drinks, smoked salami, etc. For colds, fevers and diarrhea, people often take anti-inflammatory drugs and antipyretics on their own, not knowing that penicillin and aspirin are the two types of drugs that most commonly cause hives, and cephalosporins and antipyretics with similar chemical structures can also cause allergies. Some patients have a normal diet and no history of taking medications, but why do they somehow get bumps? It may be a chronic infection in your body that has gone unnoticed: do you have chronic tonsillitis? Do you have tooth decay? Are your growing wisdom teeth always inflamed? Do you have frequent urinary tract infections? Maybe if you get your cavities removed and your chronic tonsillitis treated, the bumps will go away. There are other causes that should not be ignored: pollen floating in the air, dust mites indoors, decorative materials such as paint, coatings and formaldehyde, recent vaccinations, chronic systemic diseases such as lymphoma and tumors, etc. So, hives may seem simple and is indeed a common disease in dermatology, but, to treat it, you still need to be patient to find the cause and actively treat the primary cause.