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What is Indications for ECT are -a) Paranoid schizophreniab) Depression with suicidal tendencyc) Catatonic schizophreniad) Neurotic depressione) Depression in involutional stage and explain in detail?
Indications of ECT 

Severe depression with suicidal risk or with psychotic features or with stupor.
Some types of schizophrenia (catatonic or paranoid)
Schizophrenic or depressive stupor
Severe catatonia with stupor
Severe psychoses (schizophrenia or mania) with risk of suicide or homicide or physical assault.