New or supplemental claim evidence? Self, VSO, etc advice?

File a Supplemental Claim under 38 CFR 3.2501, as you have "new and relevant evidence" not previously considered by VA, which is the required pathway for challenging a decision after a denial. The new evidence must speak to the basis of the prior denial—such as proving a current diagnosis, an in-service event, or a medical nexus (38 CFR 3.303)—and should be robust, like a private Independent Medical Opinion (IMO) or newly discovered service records, not merely a personal statement. For mental health, specifically reference the rating criteria in 38 CFR 4.130, Diagnostic Code (DC) 9440, ensuring any new evidence details occupational and social impairment. The *DeLuca v. Brown* case is relevant if you need to address increased severity of symptoms over time, allowing for consideration of functional loss during flare-ups. Your actionable next steps are: 1) Obtain and review your Rating Decision to identify the exact reasons for denial (e.g., lack of nexus, no current diagnosis); 2) Gather targeted new evidence, like a nexus letter from a private physician, that directly rebuts those reasons; and 3) Submit VA Form 20-0995 with the evidence, either yourself, through an accredited VSO for free assistance, or with an accredited attorney/agent if the claim is complex. Do not file a "new" claim for the same condition, as this will create confusion and delay. **Disclaimer: This is educational information for claims assistance and should not be construed as legal or medical advice. For guidance on your specific situation, consult an accredited VA attorney, claims agent, or Veterans Service Organization (VSO).**