Too many buttock injections may lead to muscle atrophy and other conditions and hard lumps, but don’t worry too much. In this case, you can apply hot compresses to the area and massage gently to promote the fading of the hard lumps. The temperature of the hot compress should not be too high, about half an hour a day. You can also use fresh potatoes sliced or mashed into a hot compress, which can also play a role in reducing the hard knots. If the painful nodules at the buttock injections occur, it is recommended to take pain-relieving and anti-inflammatory drugs or ointments for relief. It is important to avoid greasy and irritating food and try to eat clean and hygienic food that is rich in nutrients. It should be noted that the hard nodules caused by spanking injections may also cause secondary infection or even sepsis, and some of the hard nodules will gradually become calcified. When there is local redness and swelling at the injection site, you must go to the hospital in time. Butt injections can be given bilaterally on the buttocks, and the site can be adjusted each time the injection is given to avoid the same site every time.