Consent to treatment is the legal permission to touch and treat a patient. Doing medical actions without that permission is considered unlawful touching, which in law is described as assault and battery. In this context, assault covers the threat or attempt to touch, and battery covers the actual unwanted touching, regardless of the outcome. This is distinct from negligence (failing to meet a standard of care), breach of confidentiality (privacy violation), or malpractice (professional negligence). So treating a patient without consent is best understood as assault and battery or any other form of unwanted touching.

The term describes someone the court appoints to represent a person’s interests in a legal case. A guardian ad litem is specifically named by the court to advocate for what’s best in the context of the proceeding, often for a child or an incapacitated person. This role is tied to the litigation itself, and the guardian ad litem’s duties focus on the case at hand rather than managing daily affairs. Conservator roles involve protecting and managing a person’s finances or property, not acting as a courtroom advocate for a case. A power of attorney is a voluntary document that authorizes another person to act on your behalf, not something appointed by the court for a specific legal matter. A trustee runs a trust’s assets, again outside the courtroom advocacy context.

In emergencies, care is guided by implied consent. This means you treat to preserve life or prevent serious harm even when the patient can’t give explicit permission, because a reasonable person would consent to necessary, life-saving care in that situation. Implied consent is what justifies starting therapy like CPR, hemorrhage control, or emergency surgery without waiting for a signed or spoken permission. This differs from voluntary consent, which is a free, deliberate agreement by the patient to undergo a specific treatment. Express consent is the explicit confirmation given, often in writing or a clear verbal agreement. Informed consent adds understanding of risks, benefits, and alternatives, ensuring the patient is aware before agreeing. In emergencies, the priority is timely action, with the assumption of consent to avoid harm unless there’s clear evidence the patient would refuse or cannot be treated otherwise. If the patient regains capacity or there’s an established advance directive or known refusal, those preferences guide subsequent decisions.

Duty owed in malpractice means the clinician has a legal obligation to provide care that meets the accepted standard of care for a patient. This obligation arises from the physician–patient relationship and is defined by what a reasonably competent professional would do in similar circumstances. It’s not simply the patient’s expectation, nor a financial duty to charge, and while obtaining informed consent is a separate duty, it concerns informing the patient rather than the level of medical care. So the obligation to meet the standard of care toward a patient is the best description of “duty owed.”