testing positive with ana, is an indication there is some inflamation in his body. the retina could explain this reading.
knowing his family history ..... he has a high chance of having some form of auto immune disorder.
his joint pain could be rheumatiod arthritis, (an auto immune disorder).
so it is possible he does not have lupus.
only testing can confirm this, and sometimes it takes a very, very long time to get a diagnosis.
we have asaying on here .....
"do not borrow trouble"
please try to help him, not worry about what he cannot change.
untill he has further tests, anything is possible.
quite often .... the earlier the diagnosis .... the less damage has been caused.
so there is a greater chance that he will not have the complication s his mother has.
When you're stressed, You eat Ice cream, Cake, Chocolate & Sweets. Why? Because stressed spelled backwards is DESSERTS.