Usually schizophrenia first presents in a person’s early 20s. First episode psychosis in one’s 40s is not as common, I think. It might be a good idea for him to get a neurological checkout to rule out other causes of what behaviors got him sectioned. Psychiatrists would know about referring him to a neurologist.
Also, if it is FEP (First Episode Psychosis) see this link that @SzAdmin posted on this board: https://family.schizophrenia.com/t/how-to-get-quick-access-early-psychosis-treatment-centers/11389.