We don't dispense medical advice here but all are willing to share common-sense knowledge and personal experiences.
Are you overweight? (we ask personal questions too ;-)
The reason I ask is that when I was overweight, I had terrible pain in my knees and, borrowing from another thread, used to break out into a cold sweat if I just wrote the word 'sweat' on a piece of paper ;-) After going on a low-carb diet (no starches, sugars) and dropping some poundage, my knee pain is virtually gone and no more sweating. Other side-effects of this diet are lowered blood pressure and cholesterol. Incidentally, low-carb doesn't have to be bland, there are lots of recipes and ideas around the internet.
I don't know if weight loss would help you but it did me.