Little red dot has grown on my body, which is very itchy. What happened?

Little red dot, it's itchy. It's a common skin allergy. It can be manifested as eczema, urticaria or allergic dermatitis. There are many specific reasons for allergies: the first is food allergy. For example, eat some fish, shrimp, seafood, beef and mutton, and drink a lot. , may cause skin allergies and little red dot. Second, some drugs are allergic. For example, take some antibiotics, antipyretic and analgesic drugs, sedative and hypnotic drugs, or use serum products and vaccinations. , can cause skin allergies and red spots. Third, some dust mites, pollen, fungal spores and animal fur in the environment may cause allergies and lead to itching. Fourth, it may be contact allergy. Such as contact with some metal products, rubber, dyes on clothes, etc. It can also cause local skin itching and little red dot.