NRNP 6665 EXAM QUESTIONS AND
ANSWERS
Signs and symptoms according to the DSM-5-TR - Deficits in intellectual functioning
and adaptive functioning (Lee et al., 2023)
Occurring before the age of 22 (Lee et al., 2023)
Differential diagnoses - Child abuse, debilitating medical diseases, cerebral palsy, sensory
disability, and speech disorder (Lee et al., 2023)
Incidence - Peaks between 10 and 14 years old (Lee et al., 2023)
1.5x more prevalent in males versus females (Lee et al., 2023)
Etiology - Genetic- Phenylketonuria, Lesch-Nyhan syndrome, Fragile X syndrome, and
Rett syndrome are all inborn errors of metabolism that can cause neurodevelopmental
defects or neurodegeneration (Lee et al., 2023)
Environmental- Toxic substances (alcohol, illicit drugs), infectious agents (rubella, HIV),
and uncontrolled maternal medical conditions (hypertension, asthma, urinary tract
infection, pre-pregnancy obesity, or pre-pregnancy diabetes) (Lee et al., 2023)
Prognosis - Deficits seen in intellectual disability are permanent (Lee et al., 2023)
With adequate interventions those with; Mild intellectual disability might achieve
adequate language and social skills to function independently (Lee et al., 2023) Moderate
intellectual disability might achieve a second-grade level of language and social skills
NRNP 6665