krill oil / knee break out ?

Seems like no one so far can even comment , jeez. I will try here next.
Ok so the deal is when I start a supplement of krill oil my right knee cap area breaks out in nasty red pimple like pustrils . Sore to the touch. Just on right knee no where else ! I have had this for a year . When I stop the krill oil it does not go away. With repeated applications of an herb it very slowly recedes.When I started back the break out starts on the knee again. Any answers for me ?!!?!?
Thank you !!!!!