<prompt> Maximum benefit of electroconvulsive therapy is in-HysteriaDepression with suicidal tendencyChronic schizophreniaMania  <response>: Ans. is 4b i.e., Depression with suicidal tendency o Most important and most common indication for ECT is severe depression with suicidal risk.Indications of ECTSevere depression with suicial risk or with psychotic features or w ith stupor.Some types of schizophrenia catatonic or paranoidSchizophrenic or depressive stuporSevere catatonia with stuporSevere psychoses schizophrenia or mania with risk of suicide or homicide or physical assault. 