Somebody tell Jesse Jackson Jr’s people.
Hospitals have very stringent admitting criteria that are reviewed by governmental and private agencies. This assures that hospitals maintain a certain standard of care. This is required for hospitals to maintain their licensure and standing. So they cannot admit a young healthy individual for being tired! Psychiatric hospitals are held to the same standards. There must be some identified medical diagnosis that meets criteria to need hospitalization.
So when you hear or read that someone has been hospitalized for exhaustion or dehydration immediately read that as a lie. If this is a young person under say 30 years of age most of these fabrications are covering for addiction. After 30 it can be addiction or alcoholism but many times this is also a cover for a Psychiatric illness.