A 32-year-old male presents to his general practitioner with persistent anal pain and bleeding on defecation for the past 8 months. He reports a cycle of pain, relief after bowel movements, followed by throbbing pain lasting several hours. Examination reveals a visible anal fissure at the 6 o'clock position, along with a skin tag. Which of the following is the MOST appropriate next step in management, according to Australian guidelines?