Swelled Lip

[Dean J Law]

Right, when i was seven i had a accident falling off my bike, and i fell and split the inside of my upper lip, i had to have 6 stitches on it, and i've carried on fine with it now, but it's always been swelled a little bit, but every so often it gets worse(bigger) Does anyone know why? And could i use something to make my lip go down?

Any advise appreciated.

Thanx
Dean