Well I did say there may be some physiological reason for it and also I deffo. know very little about babies and all that goes with them ..it`s certainly `news`to me that a condition such as described can be caused like that....learn something new everyday ! Anyway..as you say there Tim [and as I suggested] if he gets a little bit extra density there and leave the hair just a little longer it should help disguise it, rather than having any `interventions` done on his head... if it were me, I`d leave well alone, rather than running possible risks and probably costing a fortune on top of it all..... as you say, a good cut-in will be key too..cheers, Paul.