Q: Do I need to file “weight gain” as a separate claim when linking my sleep apnea to my PTSD?

Answer:

No. The VA doesn’t rate weight gain by itself — it’s a symptom, not a disability. File for sleep apnea secondary to PTSD, and have your nexus letter clearly explain how PTSD led to weight gain (through meds, poor sleep, or other factors) and how that weight gain contributed to your sleep apnea. Keep the claim simple and let your medical evidence make the connection.