cold urticaria
Introduction
Introduction to cold urticaria Cold urticaria is a common form of urticaria that is common in physical urticaria and can be seen at any age. The main manifestation is that the cold group can be accompanied by fever, chills, headache, joint pain, etc.; neutrophils increase, passive transfer test is negative. The latter is more common in young women. After cold, there is wheal or plaque edema in contact or exposed areas for 30 minutes or several hours. Sometimes eating cold drinks can cause oral and throat edema, and the passive transfer test is positive. The disease is characterized by the appearance of pruritic edema and wheal in the cold zone after exposure to cold water or other cold substances, which can disappear in about half an hour to an hour. It occurs mostly in exposed areas such as face and hands, and other parts can be affected in severe cases. Mouth, tongue, throat and other mucous membranes can also cause edema or even abdominal pain in case of cold food or cold drinks. basic knowledge The proportion of illness: 0.001% Susceptible people: no specific population Mode of infection: non-infectious Complications: headache, joint pain
Cause
Cold urticaria cause
Cold urticaria is more characteristic, and its onset is generally faster. Frequently, after exposure to cold water or other cold substances, itching edema and wheal in the cold zone can disappear in about half an hour to an hour; it is often seen in exposed areas such as face and hands, and other parts can be affected.
Mouth, tongue, throat and other mucous membranes can also cause edema or even abdominal pain in cold food or cold drinks; more common in female youth; symptoms of cold urticaria are often accompanied by headache, severe symptoms such as hypotension, syncope, etc. Swimming in cold water or cold water shower can cause shock or even death; use ice cubes on the skin of the forearm of the patient, and after two minutes, a typical wheal can be induced at the site.
Cold urticaria is a type that gets its name because it is often sick when the weather is cold. It is characterized by the sudden itching of the skin after encountering cold air, cold water or cold objects, and there will be whistles of varying sizes, which are not isolated. After scratching, the skin appears obvious scratches, which is tidal red, lasting for 30 to 60 minutes, and may recur after relapse. Individual patients can also cause anaphylactic shock, which is critically ill and can be life-threatening if not treated in time.
Prevention
Cold urticaria prevention
Cold urticaria is a urticaria caused by cold and can be affected by cold stimulation. After touching the warm environment, the rash will slowly fade away. However, cold urticaria often prolongs for a long time. When the weather is cold, as long as it is stimulated by the cold wind or immersed in cold water, edematous wheal will appear locally or throughout the body, and the size will vary and there will be a severe itching.
Those who have had a history of urticaria in the cold season should pay attention to the weather conditions to add clothing according to temperature changes. Be sure to do a good job in skin care, especially when taking a bath, do not use strong alkaline soap, and do not use it too frequently to avoid losing too much sebum.
Usually, exercise should be strengthened to enhance the body's ability to adapt and increase the cold resistance of the skin. People with allergies should try to choose foods without food additives, avoid seafood foods, and try to choose high-quality spices when cooking.
Complication
Cold urticaria complications Complications, headache, joint pain
Cold urticaria is a form of urticaria, while cold urticaria is both familial and acquired. The former is an autosomal dominant inheritance, which can occur after birth or early years. It can last for a lifetime. When a cold wind occurs, it can be accompanied by fever, cold urticaria, headache, joint pain, etc.; neutrophils increase, passive The transfer test was negative.
The latter is more common in young women. After cold, there is wheal or plaque edema in contact or exposed areas for 30 minutes or several hours. Sometimes eating cold drinks can cause oral and throat edema, and the passive transfer test is positive. The disease may be one of certain diseases, such as cryoglobulinemia, paroxysmal cold hemoglobinuria, cold fibrinogenemia and the like.
Cold urticaria is characterized by the appearance of pruritic edema and wheal in the cold zone after exposure to cold water or other cold substances. It can disappear in about half an hour to an hour. It occurs mostly in exposed areas such as face and hands, and other parts can be affected in severe cases. Mouth, tongue, throat and other mucous membranes can also cause edema or even abdominal pain in case of cold food or cold drinks. Often accompanied by headaches, severe cases may appear hypotension, syncope and other symptoms, swimming in cold water or cold water shower can occur shock, or even death. Is there a complication of cold urticaria?
Generally speaking, it is related to personal physique. People with allergies are prone to illness. The biggest feature of cold urticaria is that it is "frightening" when it is attacked. The affected area is a large wheal of the wind, and most patients have symptoms of red itching, and a small number of patients may also be white. When the patient does not attack, as with normal people, there is no trace of any disease.
Because of this, cold urticaria also "numbs" the nerves of many patients. Many people think that when they are sick, they will leave no traces, so they often don't care. The dermatologist at Beijing Zhongren Hospital believes that cold urticaria is not so simple. Once you relax your vigilance, you can easily get rid of it and have other symptoms that are dissociated such as diarrhea, such as diarrhea, abdominal pain, and shock. Wait.
Symptom
Cold urticaria symptoms Common symptoms Wind itch itching like urticaria...
1. The performance is mainly caused by itching and wheal in different parts exposed to cold conditions. Skin lesions can be limited to exposed areas in cold conditions or to areas exposed to cold objects. They can also be spread, involving the oral mucosa, and even manifest as headache, chills, diarrhea, and tachycardia.
2, continuous onset, cold urticaria will form a continuous history of onset, that is, repeated attacks in the same season every year. Not only will the wind rash-like redness and swelling appear on the surface of the skin, but in severe cases, the wind rash will appear in the internal organs, and the treatment will not be timely or even lead to death.
3, urticaria is not contagious, urticaria, commonly known as wheal, is a common skin disease. Temporary inflammatory hyperemia and massive fluid exudation of the skin and mucous membranes are caused by various factors. Causes local edema damage. It quickly occurs and resolves, and urticaria is itchy. Therefore, cold urticaria is not the cause of infection.
Examine
Cold urticaria examination
Blood test, skin test, skin patch test.
Diagnosis
Diagnosis of cold urticaria
1. Cold air contact test, that is, the patient is in a low temperature room (4 degrees Celsius), the positive person will appear wind blast soon after the chill, or after 10 minutes of observation, there will be erythema and wheal. This is the air test method.
2, the method of cold water determination. It should be noted that this test is not easy to identify water-borne urticaria and cold urticaria, and patients may be life-threatening if they are allergic and need to be cautious. In the test, first place one arm in water of 8~10 degrees Celsius for 5~15 minutes. If there is no erythema or wheal performance, it can be placed in water of 21 degrees Celsius. If there is no negative, the patient can take a cold shower. . Therefore, cold urticaria usually occurs in colder conditions.
3. Ice test method. In doing this test, the ice should be placed in a plastic bag or hot water bottle, and then placed on the forearm, and the ice should not be in direct contact with the skin. After 20 minutes of exposure, if the tester had erythema and wheal, it was a positive result and belonged to a rapid onset of cold. These are all ways to judge cold urticaria.
