I have it in my head, neck, shoulders, and arms. It causes me to have a nerve twitch that is pretty pronounced. I was starting to turn the corner and felt way better. Then I had a day I was real tired. The next day, I felt a weird sensation in my head. I got angry and went into fight or flight extremely easily. Like have no threshold. Since then its almost back to square one. I'm having intense fear and intrusive thoughts along with the sensations. With this disorder.. do you have to stay calm at all times in order for your nerves to heal?