I know someone (whose name happens to be Josh) who has a strange habit of twitching. What happens is that suddenly, without warning, his head will turn very quickly, as if there was a fly buzzing in his ear, and he wanted to shake it away. When I asked why, he said he has Tourette’s Syndrome.
A few weeks after I met him, I noticed myself starting to twitch, though not as much or as often. I’m pretty sure Tourette’s isn’t contagious (AFAIK, it’s not caused by bacteria, viruses or anything else that can be physically transferred to someone) so I thought maybe it was just that I was cold, which made sense because it was starting to get a little colder. But then I noticed it seemed to happen even when I wasn’t cold. I asked someone about it, (just a friend, mind you, not a professional or anything) and they said I might be having a “psychosomatic reaction” to seeing Josh twitching. Is there any evidence for this type of reaction being real? How much is known about this phenomenon? Is it like when you see someone yawn, and suddenly you have to yawn?
Some other possibly relevant information: I’m 16 and Josh is about 17. Once, I noticed I was about to twitch, and forced myself not to. I usually only see Josh in the morning Monday to Friday. It seems that it doesn’t happen later in the day, or on weekends, but I haven’t been paying attention enough to confirm this. It also seems to happen a lot less now than it did when it first started.