Lips are constantly burning

Recenty I went to the dermatologist and was diagnosed with mulluscum contagiosum for which they gave me aldara to use until it is gone.  I have only been using it for two weeks but it has been since the start of this treatment that I have noticed that my lips have been plagued with this constant burning sensation.  There even seems to be a pinkish sort of ring under my bottom lip.  I've been trying chapstick and blistex Lip Medex but none seem to be easing the burning sensation.

I know it sounds very dumb, but is it possible that the use of aldara no where near by lips is still causing this?  

I don't know what else it could be or what is causing the pinkish ring.  Can someone please help me with some insight?

Thank you very much.