Intradermal injection needle refers to the injection of liquid medicine between the epidermis and the dermis of the skin. Mainly used for three purposes:

①Drug tests to prevent allergies, such as penicillin skin tests;

② Preparations before surgery under local anesthesia, such as procaine skin test;

③ vaccination, such as BCG. If you pay attention, there are three small points when making an intradermal injection: a small needle, a small syringe, and a small injection angle. In addition, the injection liquid is generally a small amount. Because the skin is rich in nerve endings, you will feel more pain when injected intradermally, in fact, it does feel a little more painful than several other injection methods. Intradermal injections are often made on the inside of the forearm, where the skin is thin and local reactions after injection are easily recognized. After intradermal injection, a bump will form on the surface of the skin, which is normal and most disappear within half an hour.

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