<<Disclaimer: Verify this information before applying it to your situation.>> Quite a few have experienced similar problems. I have taken a while to reply as they are still trying to diagnose what is wrong with me as walking is becoming more difficult. I limp a lot. The latest diagnosis, with an ultra sound in 2 days is a Baker's Cyst behind the left knee. I suspect that the problem has to do with my body's intolerence to lots of foods...gluten,wine, cheese, peanuts, onion, garlic, capsicum, tomatoes, orange, chocolate, that I know of. I call myself the dinner guest from hell. I will list some of the ideas in the hope that they may help others. *cut out salt * it could be arthritis, (especially rheumatoid) * milk and dairy products * soy and corn * casein * calcium and potassium deficiency. good health to all gretel