title: Reversible PDD.
authors.forename: Michele
authors.initials: M
authors.lastname: Zappella
mesh_terms: D000293:Adolescent; D001289:Attention Deficit Disorder with Hyperactivity / Q000175:diagnosis* / Q000628:therapy; D002648:Child; D002659:Child Development Disorders, Pervasive / Q000175:diagnosis* / Q000628:therapy; D002675:Child, Preschool; D015897:Comorbidity; D005500:Follow-Up Studies; D006801:Humans; D018887:Landau-Kleffner Syndrome / Q000175:diagnosis / Q000628:therapy; D012043:Regression, Psychology; D005879:Tourette Syndrome / Q000175:diagnosis* / Q000628:therapy; D016896:Treatment Outcome