Their isolation leads to a growing suspicion that others are spying on them or stealing from them. In erotomania a paranoid person loves another, usually a famous person or someone with higher social standing. The paranoid person is convinced that the famous person is in love as well, but cannot acknowledge it openly. When the paranoid person's love is not returned, he or she feels a sense of betrayal that often turns to hatred and rage. Women with this disorder usually do not act on it, but men frequently find themselves in trouble with the law as a result of pursuing their love interest.
Conjugal paranoia is extreme jealousy directed at a wife or husband.
In shared paranoid disorder a dependent person adopts the delusion of someone he or she is attached to. When separated from the dominant partner, the dependent person can give up the paranoid belief. This disorder usually involves two sisters, a mother and child, or a husband and wife. In paranoid schizophrenia the person has fragmentary and bizarre delusions , or false beliefs along with hallucinations . The schizophrenic may hear voices or think that his or her thoughts are under the control of mysterious powers.