As defined in the psychology, sociology, social work and legal fields, a<unk> , or an<unk>  at risk, is a person over the age of 18 who is unable to take care of themselves. It can also refer to one who is unable to protect themselves against significant harm or exploitation. A<unk>  is one that has a substantial mental or functional impairment. A<unk> , due to the reasons listed previously may also require specific care from community resources. Substantial functional impairment is an inability that is substantial because of their physical limitations. Substantial mental impairment is a disorder of mood, thought, perception, memory, or orientation. This grossly impairs the person's judgement, behavior, or ability to be independent. It is important to note that this does not necessarily mean that the<unk>  lacks competency. The<unk> ’s circumstances must be unable to be altered or improved without direct assistance to be classed as<unk> .
Vulnerable adult
Cancer survivor
Orphan patient
HIV-positive people
Sudden cardiac death of athletes
Susceptible individual
Orderly
Emergency medical responder levels by U.S. state