What Causes Pain In Finger Joints?

I suffered a sickness of some type a couple of weeks ago: weak, feverish, and a great amount of pain in my spine (old injury area), and a extremely painful finger joints. The fingers were crippling. Most of it went away in a few days, but the fingers are still feeling a tad sore. My son was 250 miles away in philly, pa and was sick 5 days prior with some of the same symptoms, even tho we haven t been near each other in 3 months.He didn t have the body aches so much, and neither had any sniffles, congestion, etc. My first thoughts were that whatever this was brought out some of my old injuries and more severe arthritus.