When urticaria appears, physical symptoms include fever, headache, dizziness, diarrhea, or other body itching. According to the severity of urticaria, it can be divided into acute urticaria and chronic urticaria. Acute urticaria can be cured in a few days or weeks, while chronic urticaria can recur and last for several months. The main symptom is the appearance of localized red erythema on the body. The skin damage will last for several hours to several days and disappear naturally, and the body will feel intense itching and burning sensation. However, urticaria is not contagious.
1. What are the symptoms of urticaria? Is it contagious?
1. Chronic urticaria refers to patients with temporary hyperemia and edema in the internal tissues of the body due to various external factors, such as skin, mucous membranes, blood vessels, etc., and only patients with a course of more than one month can be called chronic urticaria. Because the etiology of urticaria is affected by external factors too much, the cause is often uncertain. The specific symptoms are that the patient continuously develops wind masses and red spots on the trunk, face or limbs. The onset of illness will occur several times a day or once every few days, which is uncertain.
2. Acute urticaria is a clinically common skin condition. Its symptoms are mainly allergic skin diseases such as itching, red spots on the body of the wind mass or accompanied by angioedema. Acute urticaria is a localized edema reaction caused by the expansion of small blood vessels in the mucous membrane and increased permeability of the patient's skin due to external infections.
3. Clinically, urticaria is not contagious. Whether it is chronic urticaria or acute urticaria, it is just a symptom caused by skin allergies and cannot be transmitted to each other. The reason why the patient develops urticaria is mainly because the urticaria patient is exposed to some physical diseases caused by allergic substances, and it may also be because the patient's body itself is an allergic. Once the patient comes into contact with the allergen, symptoms of urticaria will appear.
2. What are the allergens of urticaria?
has many causes of urticaria, which are affected by both the internal factors of the body and the external factors of the environment, so the causes are very complicated. Urticaria may be affected by contact chemicals, mites, mosquito bites, food allergies, etc. The causes of urticaria also have some special medicines. Climate temperature, mood fluctuations, fatigue or hormonal stimulation may all cause urticaria.
3. What are the precautions for urticaria?
1. Generally speaking, people's first instinctive reaction to itchy skin is to quickly scratch it with their hands. However, many patients do not know that once scratched, it will not only stop the itching, but it may also increase the degree of skin damage as the scratch gets worse.
2. Many urticaria patients would like to use hot water to relieve itching, but once they use hot compresses to relieve itching, although the hot compresses can temporarily relieve the body’s urticaria, it is actually another stimulus. Because heat can strain people's blood vessels and release more sources of allergies.
In short, urticaria will have skin itching and erythema symptoms, but it will not be transmitted to other people, but the specific source of infection has to be checked in the hospital.
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