abby gable answered question 5/28/2011 Does Fibromyalgia Cause Small Knots In Your Muscles? I Have Lumps In My Muscles All Over, And They Hurt When They Are Touched. Hi, I have been tested for ruematiod arthritis and I'm negative< I have crohns disease, I have painful joints and lumps on the top of my hands, The biopsy showed fiborous tissue with chronic inflamation< could I have fibromylaga?