My son is 6 he suffers from fatigue, pain, myoclonic jerks, sleep fragmentation, clumsiness, weakness, geographic tongue, grinding teeth sleeping etc?

Pediatric Neurologis: If possible I would recommend that you see a Pediatric Neurologist that can fully evaluate your son and develop a treatment plan. If this is not possible outside of the States, it may be appropriate for you to come to a Childrens medical center here for a thorough evalution. A diagnosis is a first step, a comprehensive care plan would be the ultimatley goal however.