Patient's question:
The baby was premature and stayed in the hospital for a while. After discharge, there was redness and swelling in the left arm, but it wasn't very noticeable. Over the past two days, the redness has worsened. The baby is less than three months old now. Could you please consult a doctor to see if we need to go to the hospital for a check-up, or if we should just apply something at home and continue to monitor the situation? Thank you!Doctor's answer:
Hello, according to your description, the redness and swelling on your child's left arm suggests that this is the site where the vaccine was administered. You can consult whether it was the Bacillus Calmette-Guérin (BCG) vaccine. About 2 weeks after vaccination, local redness and infiltration may occur. If it subsequently becomes purulent and forms a small ulcer, it typically crusts over within 8 to 12 weeks. Generally, no treatment is required, but local hygiene should be maintained to prevent secondary infection.