Suggest treatment for rash
Hello. I just read through your question.
Sounds like your doctor did a pretty thorough investigation.
Erythema Marginatum, as you've probably already learned, is associated with Acute Rheumatic Fever. This is typically brought on by an untreated Strep infection somewhere in the past. This doesn't seem likely. Also, I'm sure your doctor already tested for it.
In the pediatric age range, even a 21 year old, the most likely diagnosis left is a viral infection, as you mentioned. The dermatologist will help out here. But there isn't any reason to panic. It will resolve and he will be fine.
And of course he has that distinctive rash. It is possible he had strep once and it was untreated. I am wondering about the possibility of Rheumatic Fever. Should I have him go to the health clinic at Tufts tomorrow. Is there a test they can do for this? he was on antibiotics for a week (doxatricline sp?) I believe. The symptoms actually seemed to subside and then he stopped taking it and they recurred. He was on it initially because they thought he had Lyme. Thanks for being so helpful. I realize it might also be a virus. Can a virus cause that kind of rash and inflammation? Again he does not feel sick.
Thank you for the follow up question.
I would first ask your doctor if he thought about Rheumatic Fever and if he did blood work to rule it out. If he did, we can scratch it off the list.
Also, keep in mind, the blodd test that showed inflammation is a very nonspecific test. Even a virus can give that result.
Considering your son is feeling fine, I would consult your doctor about Rheumatic Fever and cinsult with the dermatologist before doing anything more dramatic.
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