In some cases, patients have discovered that applying focal finger pressure, usually to the temple, relieves or even abolishes the spasms for the duration of the application. It is, however, difficult for the patient to sustain the finger pressure and impossible to apply it during activities when eyesight is important e.g. driving, typing or other bimanual tasks. The phenomenon can be regarded as the equivalent of the sensory trick (ST or geste antagonistique) seen in some cases of spasmodic torticollis whereby finger tip pressure on the chin prevents or reduces the muscle spasms in the neck and allows the head to be held straight.