How can you tell if someone is skitzofrenic?

The early signs of schizophrenia include deterioration of personal hygiene, forgetfulness, depression, inability to express sadness or joy, inappropriate laughter or crying, social withdrawal, oversleeping or insomnia and developing irrational suspicions. Schizophrenia is often confused with multiple/split personality disorder but they are two very different conditions and schizophrenia is far more common. Schizophrenia is not the development of multiple personalities but, rather, becoming split off from reality.