Every decade or two, the American Psychiatric Association reworks its Diagnostic Statistical Manual, or DSM, to try to have diagnostic categories reflect the current state of theory and practice. Given enormous evidence that we’re currently overdiagnosing things and medicalizing normal behavior, many had hope that the upcoming DMS-5 — the fifth major revision — would show some restraint. Instead it seems that the DSM-5 may include a new proposed “mood disorder” called “disruptive mood dysregulation disorder,” or DMDD.