<prompt> Infidelity jealousy involving spouse is the thought content of which disorderCapgras syndromeOthello syndromeHypochondrial paranomiaDeclerambaults syndrome  <response>: 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 