Physical Nexus Letters
Nexus letters for the physical conditions veterans actually claim
From migraines and sleep apnea to GERD and IBS, Dr. Allen writes physician-authored nexus letters that map your condition to your service record.

Headaches & Migraines
Migraine, tension, and post-traumatic headache — including secondary to TBI.
Learn more →Sleep Apnea
Direct sleep apnea and secondary sleep apnea (PTSD, GERD, obesity, medication-induced).
Learn more →GERD
GERD directly or secondary to mental health medications and other service-connected conditions.
Learn more →View All
Every physical and secondary condition we write nexus letters for.
Learn more →FAQ
