<prompt> A 30-year-old male presents to OPD with erectile dysfunction. Basic screening evaluation is unremarkable. The next step in evaluationmanagement should be:Oral sildenafil titrate trialCavernosometryDoppler studyNeurological testing  <response>: In a young patient with negative screening, the most likely cause of erectile dysfunction is psychogenic erectile dysfunction. He should be given a trial of oral sildenafil. Alternatively, other drugs can also be used like Oral Phentolamine ,Alprostadil intraurethral injectable Psychotherapy can also be given specifically Dual Sex therapy Masters and johnson technique: In this couple is treated as a unit. 