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Week 8: Study Guide Student Name College of Nursing-PM:NP, Walden University NRNP 6665: PM:NP Care Across the Lifespan = Faculty Name Assignment Due DateAutism Spectrum Disorder Study Guide Introduction Differentiations in brain development are thought to be the root cause of autism spectrum disorder (ASD) (Christensen & Zubler, 2020). =t is characterized by difficulties in socialization, communication and interaction and limited or repetitive activities or interests (Christensen & Zubler, 2020). =t is possible for people with ASD to learn, move, or pay attention in unique ways. (DFTB, 2018) Signs and Symptoms According to the DSM-5-TR (McKernan et al., 2017) Social communication and social interaction Restricted or Repetitive Behaviors or Interests Other CharacteristicsLack of facial expressions like happy, sad, surprised, angry, etc. Does not play simple games that are interactive Absence of gestures by 12 months of age Lack of interest in others by 15 months of age. Obsessive and compulsive movements. =nterests that are obsessive :as to follow specific routines. Flaps hands, rocks body, or spins self in circles. Portrays unusual reactions to how things sound, smell, taste, look or feel. Abnormal reactions to the way things look or feel. =nability to express oneself verbally, move quickly, or learn new