Itching

 just had a LLL Removal, all well everything healing perfect. Do have bad depression, but expected that.  My question is just below my left boob I have a small mole, had since born, but lately it has become extremely itchy and the area around it.  It is very localised and was wondering if this is normal.   I get itching anyway as I have NHL stage 4, ( remission 3yrs) not sure if related.  It has only happened since lung surgery.   Thanks for help xx