Severe Pain In My Hips, Legs And Hands With Dislocation. Symptoms Of Chiari Malformation?

I am having severe pain in my hips, legs and hands, that started with pain in my right hip with the feeling of dislocation at times. If I get up from sitting down, I can barely walk for a few minutes, feet feel flat and leg pain is severe. If I kneel down I can hardly get up. When grabbing things, my hands are very weak and they hurt. I have Chiari Malformation and think I may be going into Lupus or something very serious.