Question
After a 4-month-old baby received a preventive shot, a bump appeared near the injection site. What is this situation, and what kind of help is needed?
Answer
Developing a lump near the injection site after vaccination is a normal side effect. The baby should drink plenty of water, rest more, and a raw potato slice can be applied to the needle mark to reduce swelling. If the fever exceeds 38.5 degrees Celsius, seek medical attention promptly. Immediate measures should be taken to address the lump after an infant’s intramuscular injection, such as cold compresses, magnesium sulfate solution hot compresses,or a decoction of mulberry leaves applied to the cloth. If the lump has a “trembling” sensation or a pus head appears, seek medical attention immediately.