Myerson's sign
Encyclopedia
Myerson's sign is a medical condition where a patient is unable to resist blinking when tapped on the glabella
, the area above the nose and between the eyebrows. It is often referred to as the glabellar reflex
. It is often an early symptom of Parkinson's disease
, but can also be seen in early dementia as well as other progressive neurologic illness.
Glabella
The glabella, in humans, is the space between the eyebrows and above the nose. It is slightly elevated, and joins the two superciliary ridges.-Etymology:The term is derived from the Latin glabellus, meaning smooth, as this area is usually hairless....
, the area above the nose and between the eyebrows. It is often referred to as the glabellar reflex
Glabellar reflex
Glabellar reflex is a primitive reflex. It is elicited by repetitive tapping on the forehead. Subjects blink in response to the first several taps...
. It is often an early symptom of Parkinson's disease
Parkinson's disease
Parkinson's disease is a degenerative disorder of the central nervous system...
, but can also be seen in early dementia as well as other progressive neurologic illness.