If there are hard lumps in the arm after DPT vaccine, you can apply hot compresses, observe and go to the hospital if necessary.
1. If there are hard lumps with redness and swelling at the injection site, it may be a local reaction, then if the scope is not big, you can apply hot compresses and observe it, and generally it can be seen obvious improvement after 1 week.
2. If there is a lump accompanied by systemic reactions such as fever, or a large range of lumps or hard lumps are very obvious, then it is recommended to consult the hospital in time to determine whether there is a subcutaneous hematoma or infection, etc., and if necessary, intervene through surgical means, such as the use of topical antibiotics, and even serious infections, to be treated by incision and drainage and other treatment methods.
Parents must observe their children after the DPT vaccine, and seek medical attention as soon as possible if there is any discomfort.