A person of 35 years is having firm belief about infidelity involving the spouse. And he never allow her to go out of home alone. He often locks his house, while going office. Inspite of all this he is persistantly suspicious about her character. The probable diagnosis is -
When the content of delusions is predominantly jealousy (infidelity) involving the spouse, it is called as othello syndrome or conjugal paranoia.
Schizophrenia
Delusional parasitosis
Clerambault's syndrome
Othello syndrome