Does a hug make you feel better when you're sad?

No. Not always. Sometimes it's better not to touch me at all. Function of the PTSD, I'm told.

When I was a kid and got like that, my mom would get within about 3 feet of me, no closer, and make "petting" motions in the air to inform me I was being a porcupine again and she was smoothing down the spines. No words, and she knew not to touch me. Sometimes it even worked.

Have at it.