Which of the following is delusion

Which of the following is delusion ?
a) Othello syndrome
b) Declerambault’s syndrome
c) Pyromania
d) None
Correct Answer - A
Ans. is ‘a’ i.e., Othello syndrome & ‘la’ i.e., Declerambault’s
syndrome
Delusional disorders (Persistent delusional disorders)
Delusional disorder, previously called as paranoid disorder, is a
group of disorders where long standing delusions are the primary or
only manifestation of illness. Persistent delusions must be present
for at least 3 months (ICD-10) or for at least 1 month (DSM - IV).
Depending on the content following type of delusions may occur.

  1. Delusions of persecution : - These are the most common type of
    delusions. The patient believes that he is conspired against and
    harassed or bodily injured, spied or followed or poisoned by other.
    Patient believes that he is under the surveillance of police, as his
    neighbours have complained against him; or he is watched and the
    news in the newspaper refer to him.
  2. Somatic (Hypochondrical) delusions : - There are delusions related
    to the patients body or its part. This condition is also referred to as
    monosymptomatic hypochondrical psychosis (MHP) or
    hypochondrical paranoia. Examples are : ?
    Body or its part being ugly or misshapen, i.e., nose is deformed —>
    Delusional dysmorphophobia.
    Infestations by worms or foreign bodies —> Delusional parsitosis.
    Emitting a foul odor —> Delusional halitosis
  3. Delusions of grandeur : - Delusions of inflated self esteem and
    self image. The patient may believe that he is an important person
    who is able to help other, or may report hearing the voice of God
    and the Saints, Confirming their elevated status.
  4. Delusions of jealousy (infidelity) : - Content of delusions is
    predominantly jealousy (infidelity) involving the spouse → Othello
    syndrome or Conjugal paranoia. Elobrate steps are taken to prevent
    the spouse to go outsite (Locks the spouse, not allowing her go
    outside), or to catch the spouse red handed (private detectives).
  5. Delusion of love (Erotomanic delusion or erotomania) : - More
    prevalent among females and there is an erotic conviction that a
    person with higher status is in love with patient—) Declerambault’s
    syndrome.