question is: is normal to see, child has fiew day when all sems to be relative normal, and another 2-3 day when it can not walk trougt obstacles, drops on clear ground, speak is not so unersteandible. in tehnical speak we can say like empty battery.... is posible to say that can be chemical (or what) variation which can be treated and healed ? ...fix the good days. for me the variation is hope for beter (no?) sory for my bad english, i'hope was understeadible ;-) dad