Hello. I'm new to this forum and as I don't get much practical advice from my doctor I'm hoping I'll find it here. I have o. arthritis in my knees, it can be extremely painful. I don;t take any medication for it, but I do get shots on an as needed basis. Sometimes they work, sometimes not. What I'm wondering about is this... every 3 to 4 months I start getting flu like symptoms. I can't walk, legs swell, body aches and I stay in bed. This will last several days and gradually I get better. The pain isn't gone but the aching tired feelings are , and I can hobble around again. I wonder if any of you recognize this or am i dealing with something else. Thank you.