As a 35 year old male who was only recently diagnosed with lupus, I would say, "Yes," especially since I went through the whole "I think (hope, really) that I have lyme disease" phase, as well. Although it is possible to have Lyme disease without it showing up positively in a blood test, it is just as possible to have lupus without having enough of the criteria for a positive diagnosis. (BTW, doxycycline, the most commonly prescribed antibiotic for Lyme disease, has a mild anti-inflammatory effect for lupus, RA, etc.) With the genetic history of lupus, make your son an appointment with your rheumatologist ASAP - even if there aren't enough criteria now, your doctor will probably be able to recognize enough symptoms to start some form of treatment (mine started me on plaquenil before he was completely sure - it's not gonna hurt anything, and I'm safe from maleria! :lol: ), and starting treatment earlier may help keep it under better control in the future.