Chd2-Related Neurodevelopmental Disorders, also known as epileptic encephalopathy, childhood-onset, is related to photoparoxysmal response 1 and hemophagocytic lymphohistiocytosis, familial, 1, and has symptoms including seizures, absence seizures and myoclonic seizures. The drugs Dopamine and Memantine have been mentioned in the context of this disorder. Affiliated tissues include brain.