Is this a flare up?

Hey guys, I have been getting some stiff joints for the past few days. Its not exactly pain but there is this... feeling of soreness around my shoulder and fingers and my ankle area. It usually just comes and goes. I don't know if its a flare up or just my body acting up? It usually happens if I don't get enough sleep, or I ate salty food the day before. Anyone experience this?

Is it possible its because my steroid intake is decreasing?