What is the reason for new rashes during the hand, foot, and mouth disease period?

Patient's question:

A 1.5-year-old boy, diagnosed with hand, foot, and mouth disease on Sunday, had a fever for three days. He received one dose of intravenous medication for fever reduction at the hospital. Now, on the third day of fever reduction, he suddenly developed red rashes on his abdomen, buttocks, and thighs. From yesterday to this morning, his appetite and spirits were normal. However, he ate little for lunch and dinner, but his spirits remained normal.
Hello, what could be the situation? Has the hand, foot, and mouth disease not yet fully recovered? How can this be resolved?

Doctor's answer:

During the treatment of hand, foot, and mouth disease, new rashes may reappear. In addition to considering the relief of hand, foot, and mouth disease, it is also necessary to consider allergies caused by medications or other factors. If the new rashes are papular urticaria-like, it is more likely to be allergic. If the rashes are vesicular, it may indicate disease progression. The child is troubled by hand, foot, and mouth disease, so the mother must take the child to seek immediate medical treatment to avoid various misunderstandings. Symptomatic treatment should be administered promptly. For parents, it is important to closely observe changes in the child's symptoms and provide the best possible support for timely treatment of the disease.

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