Hallucinations, Psychosis

Patient: Hello DocMy dad is 56 years old and is been consuming alcohol since years. It has now started affecting him and I presume he is showing effects of advanced Psychosis.He gets hallucinations about worms/ insects.. But is unaware of his current situation. I want to know if it is safe and advisable to tell him that the problem is psychological?

Symptoms: Hallucination

Doctor: