Disorientation is the opposite of orientation. It is a cognitive disability in which the senses of time, direction, and recognition of items (things), people and places become difficult to distinguish/identify.
Disorientation can occur in healthy young adults as well as in the elderly or ill person. While exercising, if a person becomes dehydrated as a result of over-exertion, he or she may become disoriented to the time or place. While exercising, the body may not be able to supply enough oxygen to the brain fast enough. Mental disorientation can be the aim of some performance art, as creators with 'audience disorientation' as a goal may work to deliberately augment sensations of time, place, person, purpose.