I'm not a medical doctor but that sounds suspiciously like tendinitis. I was advised that rest is the only real cure, which means for me having a week or two off the bike once every quarter. For you it might mean more or less rest.
If it is tendinitis, all the advice on here about seat positioning and spinning is valid - the more unnecessary strain you put on your knees the more likely it is to flair up.
Get yourself to a GP to get a proper diagnosis.
If it is tendinitis, all the advice on here about seat positioning and spinning is valid - the more unnecessary strain you put on your knees the more likely it is to flair up.
Get yourself to a GP to get a proper diagnosis.