<prompt> Bells palsy not responding to the steroid. What will be the further line of management -Increase the dose of steroidVasodilators and ACTHSurgical decompressionElectrophysiological nerve testing  <response>: If the patient of Bells palsy is not responding to conservative treatment, electrodiagnostic study electrophysiological study should be done.The electrodiagnostic study includes electromyography EMG, Electroneurography ENG, minimal excitability test and maximal excitability test.Surgery is reserved for those who meet electrodiagnostic electrophysiological study criteria or are worsening on medical treatment. 