Infidelity & jealousy involving spouse is the thought content of which disorder
When the content of delusions is predominantly jealousy (infidelity) involving the spouse, it is called as Othello syndrome or conjugal paranoia. Ref: A Sho Textbook of Psychiatry, Niraj Ahuja, 7th Edition, pg. no. 84
Capgras syndrome
Othello syndrome
Hypochondrial paranomia
Declerambault's syndrome
Schizophrenia and other psychotic disorders