DOMAIN 3: Diagnosis and Treatment covers the most tested psychiatric conditions on the ANCC exam (24%), focusing on high-yield diagnosis and management.

Description

• Neurodevelopmental and foundational disorders: autism spectrum disorder, ADHD, fetal
alcohol syndrome, fragile X syndrome

• Disruptive and behavioral disorders: oppositional defiant disorder, conduct disorder,
disruptive mood dysregulation disorder, intermittent explosive disorder

• Mood disorders: major depressive disorder, bipolar disorders, thyroid-related mood
changes

• Anxiety and trauma-related disorders: generalized anxiety disorder, social anxiety
disorder, PTSD, obsessive-compulsive disorder

• Psychotic, personality, and stress-related disorders: schizophrenia, schizoaffective
disorder, personality disorders, suicide assessment, adjustment disorders
This module builds strong clinical reasoning, pattern recognition, and confidence for answering
board-style questions.

If you master this section, you significantly increase your chances of passing because it targets
the highest-yield content on the exam.