All are causes of intellectual disability except
Fetal alcohol syndrome
Down syndrome
Serotonin syndrome
Fragile X syndrome
The Correct Answer is C
A. Fetal alcohol syndrome (FAS) is a leading preventable cause of intellectual disability. Prenatal alcohol exposure disrupts brain development, leading to cognitive impairment, behavioral problems, and facial abnormalities.
B. Down syndrome (trisomy 21) is a genetic disorder that causes intellectual disability, developmental delays, and characteristic physical features. It results from an extra copy of chromosome 21, affecting brain development and cognitive function.
C. Serotonin syndrome is an acute, life-threatening condition caused by excessive serotonin activity due to medication overdose or drug interactions (e.g., SSRIs, MAOIs, MDMA). Symptoms include hyperreflexia, autonomic instability, and altered mental status, but it does not cause intellectual disability.
D. Fragile X syndrome is a genetic disorder caused by a mutation in the FMR1 gene on the X chromosome. It is the most common inherited cause of intellectual disability, leading to cognitive impairments, social anxiety, and hyperactivity, often resembling autism spectrum disorder (ASD).
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Eccentric. Individuals with schizotypal personality disorder (STPD) exhibit odd or eccentric behaviors, speech, and thought patterns. They may dress unusually, speak in vague or metaphorical ways, or hold bizarre beliefs that are not delusional but are far outside societal norms.
B. Mood swings. Frequent mood swings are not a characteristic feature of schizotypal personality disorder. Instead, they are more commonly seen in borderline personality disorder (BPD) or bipolar disorder. While individuals with STPD may experience transient emotional disturbances, their symptoms are more related to social detachment and cognitive distortions than rapid mood fluctuations.
C. Social anxiety. People with STPD experience intense social anxiety, often due to paranoia and distrust of others rather than fear of judgment (as seen in social anxiety disorder). Their discomfort in social situations does not improve with familiarity, leading to persistent isolation.
D. Paranoid. Paranoia is a core symptom of schizotypal personality disorder. Individuals with STPD often have suspiciousness and odd beliefs, such as thinking others are plotting against them or misinterpreting benign events as having hidden meanings. This paranoid thinking contributes to their social withdrawal and difficulty forming close relationships.
Correct Answer is A
Explanation
A. Mesolimbic pathway is associated with reward, motivation, and emotions and is hyperactive in schizophrenia, leading to positive symptoms such as hallucinations, delusions, and disorganized thinking. Antipsychotic medications work by blocking dopamine (D2) receptors in this pathway, reducing psychotic symptoms.
B. Nigrostriatal pathway controls motor function and coordination. Dopamine blockade in this pathway leads to extrapyramidal symptoms (EPS) such as tremors, rigidity, and tardive dyskinesia, which are common side effects of first-generation antipsychotics (typical antipsychotics).
C. Tuberoinfundibular pathway regulates prolactin secretion. Dopamine inhibits prolactin release, so blocking D2 receptors with antipsychotics leads to increased prolactin levels, causing gynecomastia, galactorrhea, and menstrual irregularities.
D. Mesocortical pathway is responsible for cognition, motivation, and emotional regulation. In schizophrenia, this pathway is hypoactive, contributing to negative symptoms such as apathy, social withdrawal, and cognitive impairment.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.