During a lupus flare my baby head-butted me in the lip and soon after I got a sore. The sore healed in a few days but by that night a rash started to appear near to in side of my bottom lip where my lips touch. As the bottom lip healed the rash moved to my top lip where my lips meet. For over 2 weeks the rash has been bouncing all over my lip, healing and popping back up. I saw 2 doctors that don't think it's a cold sore and I even got a negative blood test for the antibodies. I wonder if the blood work was wrong or could it be related to my lupus