Education Hub

VA Mental Health Claims Education Library

Evidence-based guidance on nexus opinions, C&P exams, independent psychological IMEs, and how VA decisions are evaluated.

START HERE

VA Mental Health Nexus Letters Explained

Understanding how medical nexus opinions are evaluated is central to VA mental health disability claims. This guide explains what a nexus letter is, how it differs from a DBQ, and when a full psychological IME may be appropriate.

HOW VA EVIDENCE WORKS

Understanding VA Evidence: IMEs, Nexus Opinions, C&P Exams & VA Standards

Understand how VA adjudicators evaluate medical evidence, where nexus opinions, C&P exams, DBQs, and Independent Medical Examinations fit, and what makes evidence stronger or weaker under VA standards.

Three-part graphic reading: The Myths Veterans Hear, The Facts That Actually Matter, The Standard the VA Applies — a visual introduction to what veterans are being told about nexus letters versus what VA evidence standards actually require.

Are Nexus Letters Getting Veterans Denied?

Are Nexus Letters Getting Veterans Denied? Written by Dr. Crystal Willoughby, PsyD Licensed Clinical Psychologist, Founder Professionally reviewed by Dr. Amanda Barrow, PhD Licensed Clinical

Learn More »

April 1, 2026 No Comments

Depression evidence pathway for VA disability claims showing service connection, diagnosis, clinical interview, functional impairment, and medical nexus

Nexus Letter for Depression in VA Disability Claims — What the Evidence Must Show

Nexus Letter for Depression in VA Disability Claims: What the Evidence Must Show Written by Dr. Crystal Willoughby, PsyD Licensed Clinical Psychologist, Founder Professionally reviewed

Learn More »

March 23, 2026 No Comments

Diagram showing how a service-connected condition such as tinnitus, chronic pain, or TBI can lead through a documented clinical pathway to a DSM-5-TR diagnosable mental health condition and resulting functional impairment in a VA disability claim.

Secondary Service Connection for Mental Health Conditions in VA Disability Claims

Secondary Service Connection for Mental Health Conditions in VA Disability Claims Written by Dr. Crystal Willoughby, PsyD Licensed Clinical Psychologist, Founder Professionally reviewed by Dr.

Learn More »

March 13, 2026 No Comments

Infographic titled “Do I Need a Nexus Letter? Understanding the Medical Link” showing service treatment record to current diagnosis, noting that well-supported medical evidence carries more weight, C&P opinions may be sufficient in some cases, stronger independent medical evidence is sometimes needed, and the evidentiary threshold is “at least as likely as not.”

Do I Need a Nexus Letter for a VA Disability Claim?

Do I Need a Nexus Letter for a VA Disability Claim? Written by Dr. Crystal Willoughby, PsyD Licensed Clinical Psychologist | Founder Professionally reviewed by

Learn More »

March 10, 2026 No Comments

Veteran experiencing stress related to PTSD symptoms, illustrating mental health conditions evaluated in VA disability claims

Nexus Letter for PTSD in VA Disability Claims

Nexus Letter for PTSD How the VA Evaluates PTSD Nexus Letters in Disability Claims Written by Dr. Crystal Willoughby, PsyD Licensed Clinical Psychologist | Founder

Learn More »

March 9, 2026 No Comments

Diagram showing two medical opinion pathways in VA disability claims: direct tinnitus impairment vs documented progression from tinnitus to sleep disruption to depression or anxiety and functional impairment

When Tinnitus Contributes to Mental Health Conditions in VA Disability Claims

When Tinnitus Contributes to Mental Health Conditions in VA Disability Claims Written by: Dr. Crystal Willoughby, PsyD, Licensed Clinical Psychologist, FounderProfessionally reviewed by: Dr. Amanda Barrow, PhD, Licensed Clinical

Learn More »

March 6, 2026 No Comments