A nurse is caring for a client who has overdosed on morphine sulfate (Astramorph) and was provided naloxone (Narcan) via subcutaneous route 15 minutes ago. Which of the following signs indicate that the client has abstinence syndrome? (Select All That Apply.).

A. Coma is typically a symptom of opioid overdose, not abstinence syndrome. B. Pinpoint pupils are commonly associated with opioid toxicity, not abstinence syndrome. C. Fever is a sign of abstinence syndrome, which can occur after opioid withdrawal. D. Vomiting is also a symptom of abstinence syndrome, which is a withdrawal reaction that can occur when naloxone reverses opioid effects.