question: hi doctor, my son is 9yrs old and is suffering from halo nevi on his back and chest since he was 3yrs. the no. has been the same since the last 3 yrs and some nevi hv infact faded somewhat.can u explain if there is a possibility of them reoccuring. my son is extremely good in studies and sports.also what treatment can be given for the stubborn nevis? pls advise.