Schizophrenics need all our love, support and understanding to help them with their pain and suffering. There are positive and negative symptoms. Positive include hallucinations and delusions. Negative include lack of interest, lack of energy, lack of emotion, lack of enjoyment and lack of concentration. Not everyone will have the same symptoms and everyone will have a varying degree of symptoms.
Suicidal ideation is also common in schizophrenia.
My son doesn't have positive symptoms. He has all the negative with paranoia. He is also highly suicidal when unwell. It is believed that a neurotransmitter receives too much dopamine. It is also believed to be genetical, and certain stresses will cause an episode.