When a physician doubts a patient's capacity to consent, they should understand the risks, benefits, and alternatives of a proposed procedure, as well as, express his or her treatment preferences. In this situation, the physician should not proceed with the procedure until they are confident that the patient has the capacity to consent. If the physician believes that the patient is not able to make their own medical decisions, they may consider involving an ethics committee or seeking legal guardianship for the patient. Placing a note in the patient's medical record indicating the patient's reason for refusal and executing a release form may be appropriate if the patient has the capacity to refuse treatment. In emergency situations where consent cannot be obtained, physicians may provide necessary treatment under the principle of implied consent.