When patients behave badly: Consent, breach of the duty of care and the law.

Patients who are abusive or aggressive in ED raise special clinical and legal challenges. These include what steps clinicians should take to exclude serious illness/injury as the cause of the behaviour and when investigations or treatments can be imposed on these patients without their consent. Using a case illustration, this paper discusses legal issues which arise in this context, including how the standard of care owed by clinicians is determined and what may constitute a breach of duty; such patients' right to consent to (or decline) tests and treatment; and when clinicians may lawfully act without consent and/or control the patient's behaviour.