Scientists recently released a study that could be a useful aid in diagnosing essential tremor.
Researchers at Columbia University found 20% of essential tremor patients in the study exhibited a head snap, which is a jerking motion of the head while engaging in the finger-nose-finger maneuver. In this maneuver, people touch their nose with their finger and then try to touch the examiner’s finger in an alternating fashion to test for tremor.
The study also documented the prevalence of head snap to Parkinson’s disease patients, and they found that none of these patients exhibited head snap.
Because so many ET patients are misdiagnosed (approximately 30-50%), many as having Parkinson’s, researchers hope attention to head snap will lead to more accurate diagnosis of essential tremor.
Read more here.