I Have Had High Uric Acid Levels For Several Years

I have had high uric acid levels for several years now , so periodically I have an episode of gout . It had been 2 years since my last episode , well I had an episode about three weeks ago and it took about a week and a half before my medication finally started relieving my pain. Since that time , when I wake up in the morning my knees , ankles , feet and sometimes hips have pain. It usually goes away after I have been up and walking around for 2 to 3 hours. Any idea what may be causing this. Thanks !