In general, local intramuscular injections do not form deep nodules or hard lumps. However, in actual clinical work, there do exist individual children who form hard nodules in the posterior part of intramuscular injections, which last for weeks or even months before dissipating and absorbing, causing parents to worry.
Reasons.
1, the injection site is too shallow, the gluteal muscle is too thin, the same site repeatedly injected drugs for a short period of time and the same time in the same site injected drugs of different nature related. Guan Zhiwei, Department of Pediatrics, The First Affiliated Hospital of Henan College of Traditional Chinese Medicine
2, the nature of the injected drug: oil is more difficult to be absorbed than aqueous drug, so it is easier to form hard knots.
3, injection environment: the temperature of injected drugs in winter is too low (not properly warmed) is also an important reason affecting the absorption of drugs.
Treatment.
1, local hot compresses: hot compresses make local vasodilation, promote blood circulation, promote drug absorption, play a swelling, anti-inflammatory and pain relief, hot compress tools can be used hot water bags (wrapped in a large towel to prevent burns), but also with wet hot towels wrung out and compressed, 15 to 20 minutes each time, 3-4 times a day. Apply until the local skin is red and the child feels comfortable. After weeks to months of treatment, the hard nodes can gradually shrink and dissipate.
2, the effect of hot compress is not good enough to do local physical therapy. Infrared irradiation with local massage or ultra-short wave irradiation, once a day, after dozens of times also have obvious effect.
3.According to the theory of Chinese medicine: Chinese medicine believes that hard knots belong to stasis, which is caused by Qi stagnation and blood stasis. Therefore, you can use the decoction of Chinese herbal medicine to activate blood circulation and eliminate stasis into a soup and then apply it externally with hot towels.
4.Vitamin E: apply 200mg of vitamin E externally to the hard swelling, then massage gently for 15-20min each time, 4 times a day for 5 days as a course of treatment. Vitamin E is a non-specific antioxidant that can eliminate free radicals, maintain enzyme activity, increase the function of mitochondria and biofilm, prevent excessive oxidation of unsaturated fatty acids, maintain normal tissue metabolism, through massage, facilitate drug penetration into the skin, improve local microcirculation, thus promoting the disappearance of hard swelling.