This situation arises when a capable individual deliberately chooses to terminate their life as a result of intolerable pain stemming from an incurable disease or injury. Generally, the individual seeks support from a healthcare provider or close relatives to aid in the process of dying.
In this scenario, the patient is unable to provide consent due to being in a coma, having severe dementia, or being otherwise incapacitated. A decision to end their life may be made by family members or healthcare providers based on what they believe to be in the patient's best interests.
This is the ending of a patient's life against their wishes, often without their knowledge. In some cases, it may occur when a patient's suffering is deemed too great by healthcare providers, or due to financial or other considerations