Psychosis in Medical Conditions — MCQs
Which of the following will have an organic cause?
At which receptor is the primary action of antipsychotic medications required?
Which of the following is considered the prototypical major psychotic disorder?
What is the treatment for extrapyramidal side effects induced by Haloperidol?
Which of the following behavioral problems would suggest an organic brain lesion?
Behavioural problems caused by senility, drug damage, brain injury or disease, and the toxic effects of poisons are classified as __________ disorders
Most reliable marker of conversion to psychosis in high-risk individuals:
What is the most reliable marker of conversion to psychosis in high-risk individuals?
Which of the following is not a feature of psychosis?
Most reliable marker of conversion to psychosis in high-risk individuals:
Psychosis in Medical Conditions Indian Medical PG Practice Questions and MCQs
Question 1: Which of the following will have an organic cause?
- A. Schizophrenia
- B. Delirium (Correct Answer)
- C. Anxiety
- D. Obsessive compulsive disorder
Explanation: ***Delirium*** - Delirium is an **acute, fluctuating disturbance of consciousness** and cognition that is directly caused by a **medical condition**, substance intoxication/withdrawal, or medication side effect [1], [2], [3]. - It always has an **underlying organic etiology** such as infection, metabolic derangements, drug toxicity, or neurological disorders [1], [2]. *Schizophrenia* - Schizophrenia is a **chronic psychiatric disorder** characterized by psychosis (hallucinations, delusions), disorganized thinking, and negative symptoms. - While it has a neurobiological basis, it is considered a **primary mental illness** and not typically caused by an acute, identifiable organic illness in the way delirium is. *Anxiety* - Anxiety disorders are characterized by excessive worry, fear, and physical symptoms of arousal. They are considered **primary mental health conditions**. - Although stress can precipitate anxiety, it is not primarily due to a **specific acute organic cause** that resolves with treatment of that cause. *Obsessive compulsive disorder* - Obsessive-compulsive disorder (OCD) is an anxiety-related disorder characterized by **recurrent, intrusive thoughts (obsessions)** and repetitive behaviors (compulsions) aimed at reducing distress. - Like other primary mental health conditions, it has a neurobiological basis but is not classified as having an **acute organic cause** in the medical sense.
Question 2: At which receptor is the primary action of antipsychotic medications required?
- A. M, muscarinic
- B. 5HT4 serotonergic
- C. D1 dopaminergic
- D. D2 dopaminergic (Correct Answer)
Explanation: ***D2 dopaminergic*** - The **antipsychotic effects** of typical (first-generation) antipsychotics are primarily mediated through **D2 receptor blockade** [1]. - Blocking D2 receptors in the **mesolimbic pathway** helps reduce positive symptoms of psychosis like hallucinations and delusions [2]. *M, muscarinic* - **Muscarinic receptor blockade** is a common adverse effect of some antipsychotics, leading to anticholinergic side effects such as **dry mouth** and **blurred vision**, rather than their primary therapeutic action. - This action does not directly contribute to the antipsychotic effect. *D1 dopaminergic* - While D1 receptors are involved in dopamine signaling, they are **not the primary target** for the antipsychotic action of most drugs [1]. - Some atypical antipsychotics may affect D1 receptors, but it's secondary to their D2 antagonism and serotonin modulation. *5HT4 serotonergic* - **Serotonin receptors (5HT)**, particularly 5HT2A, are important targets for atypical (second-generation) antipsychotics. - However, 5HT4 receptors are **not a primary target** for the antipsychotic effects, and 5HT2A blockade modulates dopamine release, which is still connected to the D2 hypothesis.
Question 3: Which of the following is considered the prototypical major psychotic disorder?
- A. Bipolar disorder with psychotic features
- B. Delusional disorder
- C. Schizophrenia (Correct Answer)
- D. Schizoaffective disorder
Explanation: ***Schizophrenia*** - Schizophrenia is often considered the **prototypical major psychotic disorder** due to its characteristic presentation of **positive symptoms** (hallucinations, delusions, disorganized thought), **negative symptoms** (avolition, anhedonia), and **cognitive deficits**. - It is a chronic and severe mental disorder that affects how a person thinks, feels, and behaves, leading to significant functional impairment. *Bipolar disorder with psychotic features* - This disorder primarily involves **mood disturbances** (manic and depressive episodes), with psychotic symptoms occurring specifically during severe mood episodes. - While it can involve psychosis, the **mood dysregulation** is the defining feature, differentiating it from disorders where psychosis is primary. *Delusional disorder* - Delusional disorder is characterized by the presence of **non-bizarre delusions** for at least one month, without the other prominent psychotic symptoms (e.g., hallucinations, disorganized speech) common in schizophrenia. - The **relative absence of other positive and negative symptoms** distinguishes it from schizophrenia. *Schizoaffective disorder* - Schizoaffective disorder involves a continuous period during which there is an uninterrupted illness where a **major mood episode (manic or depressive) is concurrent with Criterion A of schizophrenia**, and delusions or hallucinations have been present for at least two weeks in the absence of a major mood episode. - Its diagnosis requires the co-occurrence of prominent **mood episodes** with psychotic symptoms, distinguishing it from schizophrenia where psychosis is the core feature without necessarily prominent mood episodes.
Question 4: What is the treatment for extrapyramidal side effects induced by Haloperidol?
- A. Barbiturates
- B. SSRIs
- C. Benzodiazepines
- D. Anticholinergic drugs (Correct Answer)
Explanation: ***Anticholinergic drugs (effective treatment)*** - **Anticholinergic medications**, such as **benztropine** or **diphenhydramine**, are the primary treatment for **acute extrapyramidal symptoms (EPS)** like dystonia and parkinsonism induced by antipsychotics like haloperidol. - They work by **blocking muscarinic acetylcholine receptors**, helping to restore the balance between dopamine and acetylcholine in the basal ganglia. *Benzodiazepines (used for anxiety and muscle relaxation)* - While benzodiazepines can offer some relief for **akathisia** (a form of EPS characterized by restlessness) due to their sedative and muscle relaxant properties, they are **not the first-line treatment for other acute EPS** such as dystonia or parkinsonism. - They primarily enhance **GABAergic transmission** and are effective for anxiety and seizure control rather than direct antagonism of EPS mechanisms. *Barbiturates (used as sedative-hypnotic drugs)* - **Barbiturates** are strong central nervous system depressants used for sedation, anesthesia, and seizure control, but are **not indicated for the treatment of EPS**. - Their significant **sedative and addictive potential**, along with a narrow therapeutic index, makes them unsuitable for this purpose. *SSRIs (used for depression and anxiety)* - **SSRIs (Selective Serotonin Reuptake Inhibitors)** are antidepressants that work by increasing serotonin levels in the brain and are used to treat depression, anxiety, and obsessive-compulsive disorder. - They **do not have a direct role** in ameliorating dopamine-acetylcholine imbalance responsible for haloperidol-induced EPS.
Question 5: Which of the following behavioral problems would suggest an organic brain lesion?
- A. Auditory hallucinations
- B. Formal thought disorder
- C. Depression
- D. Visual hallucinations (Correct Answer)
Explanation: ***Visual hallucinations*** - While visual hallucinations can occur in primary psychiatric disorders, they are *more commonly* associated with **organic brain lesions** (e.g., tumors, delirium, dementia, substance withdrawal) compared to auditory hallucinations. - They often indicate **neurological dysfunction** and warrant further investigation for an underlying physical cause. *Auditory hallucinations* - **Auditory hallucinations** are a hallmark symptom of **psychotic disorders** such as **schizophrenia**, and are less specific for organic brain lesions unless they are complex and multimodal. - While possible in organic conditions (e.g., temporal lobe epilepsy), they are more strongly linked to functional psychiatric illness than visual hallucinations. *Formal thought disorder* - **Formal thought disorder** (e.g., loosening of associations, word salad, tangentiality) is a core symptom of **schizophrenia** and other primary psychotic disorders. - It is a disturbance in the *form* of thought rather than its content, and is primarily a **psychiatric phenomenon**. *Depression* - **Depression** is a common mood disorder with diverse etiologies, including psychosocial stressors and neurochemical imbalances, but it is not typically indicative of a focal **organic brain lesion**. - Although depression can coexist with neurological conditions, it is not a direct behavioral symptom of a localized brain injury.
Question 6: Behavioural problems caused by senility, drug damage, brain injury or disease, and the toxic effects of poisons are classified as __________ disorders
- A. Psychosomatic
- B. Substance use
- C. Organic (Correct Answer)
- D. Psychotic
Explanation: ***Organic*** - **Organic disorders** are characterized by behavioral or psychological symptoms that are directly attributable to a **physiological dysfunction** or structural change in the brain. - This category includes conditions arising from **senility**, drug-induced damage, brain injury, disease (e.g., **dementia**), or exposure to **neurotoxins**. *Psychosomatic* - **Psychosomatic disorders** involve physical symptoms that are caused or aggravated by **psychological factors**, like stress. - The primary cause is not a direct physiological injury or disease of the brain itself. *Substance use* - **Substance use disorders** describe maladaptive patterns of substance use leading to clinically significant impairment or distress. - While drug damage is mentioned in the question, this category focuses specifically on the **addiction** and related behaviors, not the broad range of organic causes. *Psychotic* - **Psychotic disorders** are characterized by a significant loss of contact with reality, often involving **hallucinations** or **delusions**. - While some organic conditions can cause psychotic symptoms, the term "psychotic disorders" refers to a specific symptom cluster rather than the underlying physical cause.
Question 7: Most reliable marker of conversion to psychosis in high-risk individuals:
- A. Cognitive decline
- B. Sleep disruption
- C. Social withdrawal
- D. Basic symptoms (Correct Answer)
Explanation: ***Basic symptoms*** - **Basic symptoms** are subtle, subjective disturbances of thought, perception, and motor control that are often precursors to full-blown psychotic episodes. - They are considered the **most reliable markers** for predicting conversion to psychosis in high-risk individuals because they directly reflect underlying neurobiological vulnerabilities. *Cognitive decline* - While **cognitive decline** can be a feature in individuals at high risk for psychosis, it is a less specific predictor as it can occur in various other neurological and psychiatric conditions. - It often represents a broader, non-specific marker of underlying brain dysfunction rather than a direct indicator of impending psychosis. *Sleep disruption* - **Sleep disruption** is a common symptom reported by individuals at high risk for psychosis and can exacerbate psychiatric symptoms. - However, **sleep disturbances** are highly prevalent in the general population and across many psychiatric disorders, making them a less specific and reliable predictor of psychosis conversion compared to basic symptoms. *Social withdrawal* - **Social withdrawal** is a frequently observed prodromal symptom in individuals who later develop psychosis. - While it indicates a change in functioning, it is a non-specific behavioral change that can be linked to depression, anxiety, or other stressors, making it less specific than basic symptoms in predicting psychosis.
Question 8: What is the most reliable marker of conversion to psychosis in high-risk individuals?
- A. Social withdrawal
- B. Cognitive decline
- C. Basic symptoms (Correct Answer)
- D. Sleep disruption
Explanation: ***Basic symptoms*** - **Basic symptoms** (BS) are self-experienced, subtle disturbances in mental processes that are considered the most reliable predictors of conversion to psychosis in high-risk individuals. - They reflect early, subclinical alterations in information processing and are often reported before the emergence of more overt psychotic symptoms. *Social withdrawal* - While **social withdrawal** is a common prodromal symptom of psychosis, it is not as specific or reliable as basic symptoms for predicting conversion. - It can be present in various mental health conditions, including depression and anxiety, and may not directly indicate an impending psychotic episode. *Cognitive decline* - **Cognitive decline** can be a feature of the prodromal phase of psychosis but is often measured using objective neuropsychological tests and may not be consistently reported by individuals as a subjective experience in the same way as basic symptoms. - Its predictive power might be lower compared to the direct self-reported nature of basic symptoms. *Sleep disruption* - **Sleep disruption** is a frequent symptom in individuals at high risk for psychosis and can exacerbate other symptoms. - However, it is a non-specific symptom that is common across a wide range of psychiatric disorders and lacks the diagnostic precision of basic symptoms for predicting conversion to psychosis.
Question 9: Which of the following is not a feature of psychosis?
- A. Loss of insight
- B. Preserved contact with reality (Correct Answer)
- C. Personality disturbances
- D. Presence of delusions
Explanation: ***Preserved contact with reality*** - Psychosis is fundamentally characterized by a **loss of contact with reality**, making this option a defining non-feature of the condition. - Individuals experiencing psychosis often have profound difficulties distinguishing between what is real and what is not. *Loss of insight* - **Lack of insight** into one's own mental illness is a hallmark feature of psychosis, meaning the affected individual may not recognize their thoughts or perceptions as abnormal. - This symptom contributes to the difficulty in engaging individuals with psychosis in treatment. *Presence of delusions* - **Delusions** are fixed, false beliefs that are resistant to reason or evidence, and they are a core positive symptom of psychosis. - These beliefs are often bizarre and can significantly impair an individual's functioning and perception of reality. *Personality disturbances* - While not a primary diagnostic criterion, **personality disturbances** can be associated with psychotic disorders. - Changes in personality, mood, and behavior may occur as a result of the psychotic experience or the underlying illness.
Question 10: Most reliable marker of conversion to psychosis in high-risk individuals:
- A. Sleep disruption
- B. Cognitive decline
- C. Basic symptoms (Correct Answer)
- D. Social withdrawal
Explanation: ***Basic symptoms*** - **Basic symptoms** (BS) are self-experienced, subtle, subjective disturbances of thought, perception, language, attention, and motor control that represent the earliest detectable signs of psychosis risk. - They are considered **highly specific** to schizophrenia spectrum disorders and show good predictive validity for conversion to psychosis, particularly when persistent. - Basic symptoms reflect direct manifestations of underlying neuropathological processes and can precede full-blown psychotic symptoms by months to years. - Among the options provided, they represent the **most direct and specific marker** related to emerging psychotic processes. *Sleep disruption* - While **sleep disruption** is common in individuals at risk for psychosis and can exacerbate symptoms, it is **non-specific** and occurs across multiple psychiatric and medical conditions. - Sleep disturbances lack the specificity needed to reliably predict conversion to psychosis. *Cognitive decline* - **Cognitive deficits** (attention, memory, executive function) are observed in high-risk individuals and can precede psychosis. - However, cognitive changes are influenced by multiple factors (depression, anxiety, substance use) and are **less specific** than subjective perceptual and cognitive disturbances of basic symptoms. *Social withdrawal* - **Social withdrawal** is a prodromal symptom reflecting declining social functioning, but it is a **broad behavioral change** that can occur in depression, anxiety, and personality disorders. - It lacks the specificity and direct connection to psychotic processes that characterize basic symptoms.
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