29th February 2024

A 39-year-old male presented to the surgical assessment unit 5 days after a laparoscopic appendectomy with pain over the operation site.

A 39-year-old male presented to the surgical assessment unit 5 days after a laparoscopic appendectomy with pain over the operation site. On examination, the surgical scar was red and swollen and was seeping pus. Microbiology swabs of the scar site were sent and showed a growth of mixed anaerobes sensitive to metronidazole. The patient was started on 400 mg of metronidazole every 8 hours to be taken orally.

Which of the following side effects are most likely to occur as a result of metronidazole?