Can psychosis be present from birth but remains unnoticed till you become a teenager or older? seeing my past i c im psychotic but did not notice it.

Define "present": Yes, you can have the genetic predisposition (be pre-wired) for mental disturbances at birth. We understand that the brain matures over a long time (22-25 years).This is first seen with the limited newborn that improves to independent walking by a year, concrete thinking until the early teens & advanced thinking by late teens.Psychiatric illness often does not emerge until late teens or later.