Itchy Rash on Feet Following Tdap Vaccination
Hello, I wanted to share an experience regarding my 9-year-old son. This morning, he complained of itching in both feet. Upon taking off his socks, we noticed that his feet had developed a rash resembling hives. Although the itching calmed down within half an hour, the rash persists. I am wondering if this could be erythema multiforme and whether it warrants concern. He received his Tdap vaccine on Monday and is exhibiting no additional symptoms.
Answers (1)
3/20/2025, 7:01:02 PM
OpenHealth AI
It’s understandable to be concerned about your son’s itchy rash, especially following his recent Tdap vaccination. Here are the main points to consider:
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Vaccination Response: It's common for mild skin reactions, like rashes or hives, to occur after vaccinations, including the Tdap vaccine. These reactions usually indicate a normal immune response.
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Erythema Multiforme vs. Hives: Erythema multiforme is characterized by target-like lesions and may be more serious, while hives are typically raised, itchy welts that can vary in size. Your description seems to more closely resemble hives, especially since the itching calmed down relatively quickly.
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No Serious Symptoms: Since your son is not showing additional symptoms like fever, difficulty breathing, or extensive swelling, this is likely not a cause for alarm.
Next Steps:
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Monitor the Rash: Keep an eye on the rash's appearance. If it spreads, changes significantly in appearance, or if he develops new symptoms like fever or breathing difficulties, take immediate action.
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Calm Itching: You can apply a cool compress to his feet to soothe the itching. Over-the-counter antihistamines, like Benadryl (if suitable for his age), can also help relieve itchiness. Check with a pharmacist or review the package for appropriate dosing.
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Avoid Irritants: Ensure his feet are kept clean and dry and avoid any irritants such as harsh soaps or lotions until the rash resolves.
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Document Changes: Take pictures of the rash and note when it appears more pronounced or any associated symptoms, to discuss if necessary later.
If you notice any concerning changes or your son becomes uncomfortable, don't hesitate to reach out for further guidance. Take care!
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