Go to google and type in "example of buddy letter for migraine" (without the quotes) You should be able to come up with some examples. I just did a search and found some.
I've been waiting for 1095 days. I just recently received a letter thanking me for my patience and letting me know that it has been turned over to an analyst. I'm hoping it doesn't take too long, but from what I have been reading, not to expect much, but I am feeling hopeful!!