New! 2026

Decoding Adult ADHD: Assessment, Differential Diagnosis & Treatment Strategies

Developed by Laura Garrett, LPC, NCC, CAS, ADHD-CCSP

Course content available in audio, transcripts, and video.

Adult ADHD is frequently overlooked or misdiagnosed in clinical practice because its symptoms often overlap with anxiety, depression, trauma, and bipolar disorder. This course helps clinicians recognize how to identify ADHD in adults that have never been diagnosed. It also provides guidance on how to differentiate it from other common disorders sharing similar conditions.

Not only does this course review diagnostic criteria, it also addresses emotional and interpersonal challenges faced by both individuals with ADHD and those with whom they interact. Practical clinical strategies are presented throughout the course to help clinicians address the behavioral, emotional, and relational struggles associated with ADHD, including step-by-step tools and interventions that can be taught directly in session to improve functioning, reduce distress, and strengthen daily coping.

This intermediate-level course is designed for licensed therapists and mental health professionals who work with adult clients. Additional resources and references are provided for further study and clinical application, but are not included in the post-course test.

Educational Objectives

This course will teach the participant to

Identify the clinical presentation of ADHD in adults, including behavioral, emotional, and relational patterns.
Compare adult ADHD with common disorders with overlapping symptoms.
Discuss key symptoms important in differential diagnosis.
Apply practical therapeutic strategies to address everyday challenges encountered by people with ADHD.

Syllabus

Introduction to adult ADHD in clinical practice
Case conceptualization and identification of functional patterns
Differential diagnosis of ADHD and commonly overlapping conditions
- ADHD versus anxiety, depression, trauma, and bipolar disorder
- Symptom presentation, overlap, and key clinical distinctions
- Determining the primary presenting condition
Understanding ADHD using DSM-5-TR criteria
Neurobiology of ADHD and executive functioning systems
- Role of the frontal cortex in planning and regulation
- Role of the limbic system in emotional activation
- Interaction between emotional and regulatory systems
- Adult Brain vs Kid Brain conceptual model
Behavioral patterns in adult ADHD
- Task initiation and follow-through challenges
- Time blindness and time perception differences
- Organization and working memory challenges
- Distractibility and competing attention
ADHD strengths and adaptive capacities
ADHD and relationship dynamics
- Impact on partnerships and communication patterns
- Parent-child dynamics and role confusion
Impact of late ADHD diagnosis
- Emotional and psychological effects of delayed identification
- Internalized beliefs and self-perception
Therapeutic strategies and clinical interventions
- Strategies for task initiation
- Time management
- Strategies for distractibility and cognitive overload
- Relationship-focused interventions

ADHD101_3N

June 8, 2026

Educational Objectives

This course will teach the participant to

Identify the clinical presentation of ADHD in adults, including behavioral, emotional, and relational patterns.
Compare adult ADHD with common disorders with overlapping symptoms.
Discuss key symptoms important in differential diagnosis.
Apply practical therapeutic strategies to address everyday challenges encountered by people with ADHD.

Syllabus

Introduction to adult ADHD in clinical practice
Case conceptualization and identification of functional patterns
Differential diagnosis of ADHD and commonly overlapping conditions
- ADHD versus anxiety, depression, trauma, and bipolar disorder
- Symptom presentation, overlap, and key clinical distinctions
- Determining the primary presenting condition
Understanding ADHD using DSM-5-TR criteria
Neurobiology of ADHD and executive functioning systems
- Role of the frontal cortex in planning and regulation
- Role of the limbic system in emotional activation
- Interaction between emotional and regulatory systems
- Adult Brain vs Kid Brain conceptual model
Behavioral patterns in adult ADHD
- Task initiation and follow-through challenges
- Time blindness and time perception differences
- Organization and working memory challenges
- Distractibility and competing attention
ADHD strengths and adaptive capacities
ADHD and relationship dynamics
- Impact on partnerships and communication patterns
- Parent-child dynamics and role confusion
Impact of late ADHD diagnosis
- Emotional and psychological effects of delayed identification
- Internalized beliefs and self-perception
Therapeutic strategies and clinical interventions
- Strategies for task initiation
- Time management
- Strategies for distractibility and cognitive overload
- Relationship-focused interventions