I don't understand what you mean, what kind of neck twitch? I don't know what triggers them, but today I went to the doctor (although there was no twitching) and he said that it is a completely benign condition and that there is nothing to worry about. Some people feel them more and more often, while others less often and less. In addition, when panic and mental tension sets in, the feeling itself intensifies, that's what the doctor said.