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It started out just happening maybe once or twice a week, but lately since it has started tightening in my jawline heading toward my mouth/lips area it has started to happen at least once or twice a day for last week or so.
It just becomes like a tightening of the muscle. Just going about a normal day or activities and I can feel the muscle sort of tight up like a little cramp of sorts. It doesn't spasm it just tightens up for a couple seconds to sometimes the sensation and annoyance that will last a couple minutes.