###Human: What can cause knee pain with swelling? ###Assistant: Hello. I have noted your complaints and also gone through the reports carefully (attachment removed to protect patient identity). Anti-DNAse B and echocardiogram. Rheumatic fever. NSAIDs (nonsteroidal anti-inflammatory drugs) like Celecoxib 200 mg, Piroxicam 20 mg twice a day. It can help to reduce the symptoms of pain and swelling. For further information consult a general practitioner online.--->