| Myerson's sign | |
|---|---|
 | |
| Image showing the Glabellar Lines (the vertical creases between the eyes) which are over the area known as theGlabella, where a patient is tapped to evoke the diagnostic sign | |
| Differential diagnosis | Parkinson's disease |
Myerson's sign orglabellar tap sign is a clinicalphysical examination finding in which a patient is unable to resistblinking when tapped repetitively on theglabella, the area above the nose and between theeyebrows. It is often referred to as theglabellar reflex. It is often an early symptom ofParkinson's disease, but can also be seen in early dementia as well as other progressive neurologic illness.[1][2] It is named forAbraham Myerson, an American neurologist.[citation needed]
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