This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Psychiatry
[{'content': 'Husband having a suspicion that his wife is having affair with another man, diagnosis is \nSelect and explain. \nA. Delusion, B. Illusion, C. Hallucination, D. Delirium', 'role': 'user'}, {'content': "Answer: A \nExplanation: A delusion is false, firm (unshakeable) belief that is not accepted by other members of patient’s culture and society.\nAbove is an example of delusion of infidelity (morbid jealousy, Othello syndrome) i.e. False belief that one's lover has been unfaithful.\nPersecutory delusions (paranoid) :\xa0The patient feels that he is being persecuted against.\n\nThere is a false belief that one is being harmed, threatened, cheated, poisoned, harassed or spied on or is a victim of a conspiracy to damage his reputation.\nThe supposed persecutor of the patient may be people in the environment (e.g., members of the family, neighbours, former friend) or may be political or religious groups.\nThese delusions occur in schizophrenia (especially paranoid), severe affective disorders (severe mania or severe depression) and organic brain syndrome.\nThis is the most common type of delusion. The delusion of persecution may occur in the context of primary delusional experiences, auditory hallucinations,\xa0bodily hallucinations or experiences of passivity\n\nGrandiose delusion (expansive delusions) :\xa0False belief that one is exceptionally powerful, talented or important.\n\nThese delusions are seen most commonly in mania, However, can also occur in schizophrenia and organic states.\n\nDelusions of reference :\xa0False belief that certain objects, people or events have intense personal significance and refer specifically to oneself,\n\ne.g., Believing that a television newsreader is talking directly about oneself, or people walking on the road are talking about him.\nThese delusions are seen in schizophrenia, mania and organic states.\n\nReligious delusions :\xa0False belief pertaining to a religious theme, often grandiose in nature, e.g. :\xa0believing that one is a special messenger from God.\n\nThese delusions are seen in schizophrenia.\n\nDelusions of love (erotomania) :\xa0False belief that another person is in love with one (commoner in a woman).\n\nIn one form, termed de clerambault syndrome, a woman (usually) believes that a man, frequently older and of higher status, is in love with her.\n\nThe delusion of infidelity (morbid jealousy, Othello syndrome) :\xa0False belief that one’s lover has been unfaithful. These are seen in schizophrenia, alcohol-related psychosis, organic states.\nThe delusion of misidentification :\n\nCapgras syndrome (Delusion of double) :\xa0Belief that a familiar person has been replaced by an exact double i.e. an impostor.\nFregoli syndrome :\xa0Belief that a complete stranger is actually a familiar person already known to one.\n\nThe delusion of self - accusation or guilt :\xa0False feeling of remorse of guilt.\n\nIt occurs in Depression.\n\nNihilistic delusions :\xa0False belief that oneself, others or the world is non - existent or about to end.\n\nThere are pessimistic ideas that the patient’s career is finished, he is about to die, the world is doomed.\n\nThese occur in severe depression :\nIf nihilistic delusions are accompanied by ideas concerning bodily function failure,\ne.g., putrefaction of intestines, etc.\xa0the syndrome is called COTARD’s SYNDROME.\nHypochondriacal delusions :\xa0\xa0False belief about one’s health, patient wrongly believes that he has a severe medical illness, contrary to the all medical evidence. It is seen in depression.\nThe delusion of infestations :\xa0False belief that one is infested with small but visible organisms.\n\nAs a monosymptomatic delusional disorder, this is called EKBOM SYNDROME.\nIt is seen in the acute confusional state (due to drugs or alcohol withdrawal), in schizophrenia, in dementing illness, and as a delusional elaboration of tactile hallucinatory experiences (secondary to fornication).\n\nDelusion of control :\xa0Belief that his actions, impulses or thoughts are controlled by an outside agency and accordingly called as made action, made impulse or made an effect. Also called somatic passivity experiences (passivity phenomenon). Commonly seen in schizophrenia.\nDelusions concerning possession of thoughts\xa0:\xa0Patients with delusions about possession of thoughts may lose the conviction that their thoughts are their own. Most commonly seen in schizophrenia.", 'role': 'assistant'}]