<s>[INST] not sure if a friends dad may have a form of dementia ? his dad has just moved back to his home state and now is missing ,,,, they don t know where he is .... and he was gone 5 hrs one time and got back home after getting his barrings could a move set on a confusion . [/INST] Hello!Welcome on Healthcaremagic!His symptoms could be related to different possible disorders: dementia, depression or psychosis, or epilepsy seizures. For this reason, it would be necessary consulting with a psychiatrist for a careful mental examination and some cognitive tests. A brain MRI and an EEG are necessary too. Further blood lab tests (complete blood count, fasting glucose, blood electrolytes, thyroid hormone levels) are needed to exclude any possible triggering factors. You should discuss with his doctor on these tests. Hope you will find this answer helpful!Kind regards, Dr. Aida </s>