@donasmrs-- I think that's a good explanation.
Schizophrenia often causes people to suffer from persecutory delusions, paranoia and hallucinations. An individual with this condition may think that others are conspiring against him, are watching him or controlling him. This leads to paranoia and the fears associated with being persecuted, targeted, watched or controlled may lead to hallucinations.
The human mind is very sensitive and fears, stress and pressures often play a big role in how psychological and psychiatric disorders develop. So it is not surprising that different psychological symptoms are connected to one another and can lead to one another.