Please keep in mind, if anything, about the relationship between PTSD and Sleep Apnea. The crucial aspect is what type of sleep apnea you are clinical diagnosed with: obstructive, mixed or central. I just got back from a hearing with Judge Kramer (a very experienced BVA judge) and we had an entire argument over when sleep apnea can be linked secondary to PTSD. He threw out the entire argument because my guy had obstructive sleep apnea. And he's honestly mostly correct. Obstructive sleep apnea is mechanical in nature...the muscles are collapsing due to something extraneous, like too much neck fat or skin or terrible sleep posture or a problem with the cervical spine. Mixed and central are where the body's nervous system are in such disarray that it literally interrupts your body's ability to regulate breathing (an involuntary reflex mind you). With PTSD, essentially the argument is that the nightmares and sleep deprivation remove the body's ability to have REM sleep, or at least it's highly fragmented REM sleep. This lack of REM sleep is what, over time of course, throws havoc to the nervous system. It creates not only central or mixed sleep apnea but also a whole host of other issues, although most are cognitive. So, when trying to claim PTSD is causing your sleep apnea, you either need an initial clinical diagnosis or mixed or central or you need a MODIFIED diagnosis with an explanation for the change. Then, and only then, will you get an IMO that is proper to show the linkage. I dare anyone on here to counter my statements that obstructive is medically linked to PTSD...there are no journal articles or scientific studies to corroborate that. There are a ton on central or mixed however, and most BVA judges know this. Just food for thought.