What is type III hypersensitivity disease?

summary

My father-in-law has been suffering from joint redness and swelling since last month. Later, he also developed a special red plaque on his body. The doctor said that he had type III hypersensitivity disease. After treatment, the effect was good, but recently, the situation has been repeated, and he has been out of breath. What can't type III hypersensitivity disease eat? Let's share my experience with you.

What is type III hypersensitivity disease?

1、 Avoidance therapy is the best treatment for type I hypersensitivity disease. This may require changes in diet, occupation or relocation; Drug withdrawal; Or get rid of pets at home. A home without allergens (such as ragweed) is a paradise for those suffering from disease. When allergens (such as house dust) cannot be completely avoided, dust accumulated furniture, carpets and fabrics can be removed; Cover the bedding and pillow with plastic sheet; Wet mopping the floor and frequent dust removal can reduce the high humidity conducive to the reproduction of dust mites; And the installation of high efficiency air filter can reduce the chance of contact; Acaricides are clinically ineffective.

2、 Allergen immunotherapy (also known as desensitization desensitization) can be tried out when type I hypersensitivity diseases can not avoid allergens or effectively control allergens and drugs can not alleviate the symptoms of atopic diseases. That is to say, the allergen extract was injected into the ground step by step. Although there is no one test that can reflect the clinical improvement, there are some curative effects. The titer of IgG blocking (neutralizing) antibody increased in proportion to the dosage of desensitizer used. Sometimes, especially when the patient could tolerate a large dose of pollen extract, the serum IgE concentration decreased significantly. The reactive proliferation of lymphocytes to antigen was also decreased. The best clinical effect can be obtained by persisting in injection all the year round. According to the sensitivity, the initial dose for allergens standardized by FDA is 0.1 ~ 1.0 active units (BAU). The dose was increased weekly or fortnightly until the patient could tolerate the maximum concentration (1000-4000 Bau for standardized pollen extract). Once the maximum dose is reached, it can be carried out every 4-6 weeks. Even for seasonal allergic diseases, perennial treatment is better than pre seasonal or seasonal treatment. 　

The main allergens used for desensitization are substances that are usually not effectively avoided, such as pollen, house dust mites, fungi and insect stinging venoms. The insect venom was standardized by weight; The typical starting value is 0.01 μ g； The maintenance volume is usually 100 ~ 200 μ g。 Desensitization of animal dander is usually limited to people who are hard to avoid contact (such as veterinarians and laboratory workers), but there is little evidence to prove its effectiveness. Desensitization is not suitable for food allergy. The desensitization steps of penicillin and xenogeneic animal serum are described below.

matters needing attention

Avoid food that is easy to be sensitized and irritated, and eat less fried food and big fish and meat. Salty and cold food such as shrimp and crab can easily trigger allergic reactions in the body, so avoid ingestion