Expressed consent is characterized by:

Expressed consent is characterized by the clear and overt agreement from a legally competent adult to undergo a particular medical treatment or procedure. This type of consent is typically obtained verbally or in writing and is a fundamental concept in medical ethics and law. It ensures that patients understand the treatment they are receiving, including any potential risks and benefits, and that they actively agree to it, reaffirming their autonomy in making healthcare decisions.

In contrast, consent from minors usually requires parental or guardian approval, making it distinct from expressed consent. Consent given under emergency circumstances may fall under implied consent, where it is assumed that intervention is necessary despite a lack of explicit agreement from the patient. Implied consent is also different from expressed consent as it pertains to situations where patients are unable to provide consent themselves. Lastly, the notion that consent is assumed in all medical situations does not hold true, as explicit consent must be obtained in most cases to respect the patient's rights.