Two-year old with croup

I have posted several times about my two-year old that was infected over the summer and treated by a LLMD after getting a bullseye.

He has come down with classic symtpoms of croup two months after his tratment ended. His brother had croup twice growing up so it does mean that it is the lyme but I am a little worried that it is somehow related.

Any thoughts?

Thanks for the response. Thank god, no other symptoms.