Hi my daughter was diagnosed w serum sickness about2 weeks ago. She was on prednisone for a week and a half! She initially had hives, swelling in hands, feet, knees. She couldn't walk at one point . She was finally better on Sun and then by Wed., her daycare called bc she couldn't walk and was having pain in her right leg, near joints. It is now fri. And I haven't seen her walk since then. Her Dr. Took blood to rule out anything else, but feels it is residual effects of the antibiotic she initially took that caused this. My question is have you seen similar cases like this? And can a certain diet help her? I really do not want her on steroid again