Hello, @catzarecool – Welcome to Mayo Clinic Connect. I am happy you replied to this thread and hope the conversations help as you work through your son's condition. Seven years is a long time to be dealing with EBV. Your comment, “He can't stay well and doesn't remember feeling truly healthy,” really hit home with me. I see @kkathysan replied to your post, but I also wanted to bring @cummings3 @nataliem into the conversation in hopes they can also share their experience and knowledge.