What is thermal urticaria?

I believe everyone should be familiar with urticaria. It is a common skin disease that often occurs in summer. When the weather is hot, urticaria can also be caused by heat stimulation of the skin. Let’s follow Let’s take a look at what is thermal urticaria? Febrile urticaria is a relatively rare type of urticaria. The stimulation of heat can induce the occurrence of thermal urticaria. Summer is the peak period of thermal urticaria. What is thermal urticaria? There are many types of urticaria. Patients should distinguish them, recognize their own symptoms, and prescribe the right medicine. Therefore, it is necessary to clearly introduce the symptoms of urticaria to everyone so that timely diagnosis and treatment can be facilitated. The main symptoms of thermal urticaria are: conscious itching, which may be accompanied by abdominal pain, nausea, vomiting, chest tightness, palpitations, difficulty breathing, and a few symptoms of fever, joint swelling, hypotension, shock, laryngeal edema, and suffocation. The rash consists of wheals and flushed spots, varying in size and shape. It often occurs suddenly, appears in batches, and quickly subsides after a few hours, leaving no trace after it subsides. But it can happen repeatedly. The duration of the disease varies. The duration of acute urticaria is less than 1 month; the duration of more than 1 month is chronic. Some cases of skin scratch test show positive reaction. There are many factors that cause thermal urticaria, mainly caused by food: Animal protein foods, such as fish, shrimp, crab, eggs, milk and other seafood, are common causative factors. Certain fruits and vegetables can also cause allergies. Condiments, preservatives, and pigments added to food, and natural or synthetic substances in food can also cause urticaria. Caused by drugs: Most drugs are caused by allergic reactions. Common drugs themselves are histamine releasing agents, which can directly stimulate mast cells to release histamine and cause urticaria. Such as bacterial infection, fungal infection, viral infection, parasitic infection, etc. can all cause it. The above is the relevant introduction to thermal urticaria. I hope it can deepen everyone's understanding of urticaria and avoid the occurrence of this disease. For patients and friends, knowing more about this knowledge can better treat the disease.