Hello @djb0711, welcome to Mayo Clinic Connect. It looks like the Texas VA has a special assistance program for veterans affected by agent orange. I didn't see any phone numbers but they have a Contact Us on the website that you may be able to get some referral advice or suggestions from.

Texas Department of Health, Bureau of Disease Control and Epidemiology, Texas Veterans Agent Orange Assistance Program:
-- https://legacy.lib.utexas.edu/taro/tslac/20029/tsl-20029.html

The VA also has some information on related diseases here:

Diseases related to Agent Orange
-- https://www.va.gov/disability/eligibility/hazardous-materials-exposure/agent-orange/related-diseases/

Have you thought about reaching out to a veterans organization for help? The Vietnam Veterans of America has an outreach program for agent orange that you might find helpful. Website link - https://vva.org/what-we-do/outreach-programs/agent-orange/. The website has a link to a self help guide that you can print off or view here:

Service-Connected Disability Compensation For Exposure To Agent Orange for Veterans and Their Families (PDF)
-- https://vva.org/wp-content/uploads/2014/12/AgentOrangeGuide.pdf