Gratification disorder
Gratification disorder ( also known as "infantile masturbation" , despite occurring in children as old as 10 , or sometimes benign idiopathic infantile dyskinesia ) is a form of masturbatory behavior that has often been mistaken for epilepsy , abdominal pain , and paroxysmal dystonia or dyskinesia . 
<triplet> Gratification disorder <subj> masturbatory <obj> subclass of