Biological amnesia is -
Biological amnesia:- Head injury (concussion/brain bruises), drugs (Marijuana, alcohol), brain disease (Korsokoff syndrome, Brain tumors, multiple sclerosis, presenile dementia), temporary disturbances in brain blood supply, and transient global amnesia.
Psychological amnesia :- Childhood amnesia, dream amnesia, defensive amnesia
Lack of interest
Presenile dementia
Opioid addiction
Hypothyroidism