title: Depression and psychotic regression following prolonged methylphenidate use and withdrawal: case report.
mesh_terms: D001289:Attention Deficit Disorder with Hyperactivity / Q000188:drug therapy; D002648:Child; D003863:Depression / Q000139:chemically induced*; D006801:Humans; D008297:Male; D008774:Methylphenidate / Q000009:adverse effects* / Q000627:therapeutic use; D011605:Psychoses, Substance-Induced / Q000523:psychology*; D012043:Regression, Psychology; D013375:Substance Withdrawal Syndrome / Q000523:psychology*
chemical_list: D008774:Methylphenidate