 All children with CMN that will have their nevus removed in our surgical department will be asked to participate. The investigators will send a package of questionnaires to evaluate quality of life and stigmatization before nevus surgery. One year after surgical therapy is finished sometimes more then one session is necessary, the scar will be clinically evaluated and also another questionnaire package will be sent to evaluate the same parameters again. All parameters are checked for the patients and the families as well. Therefore self and proxy reports of the parents are asked. Moreover, for the patients this is done with interviews in case they are older than 7 years. 