Wow. My knees started bein swollen & reddened last nite!!! Now i have 2 investigate wut could b causin that! Systemic Lupus does cause those symptoms, but of course me "wonderfully, efficient" Drs have not diagnosed me w/systemic lupus, only discoid! Funny how i keep having SLE(systemic lupus erythematosus) symptoms but no diagnosis! Mayb it's the new blood pressure med? As my world turns 2 b con't.....