Progress and Prospects in Parkinson's Research/Symptoms/Glabellar tap

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Glabellar tap

Tapping just above the nose (which can initiate involuntary blinking in PD)

The following references are relevant:-

Klawans Jr. and Goodwin (1969)  Reversal of the glabellar reflex in Parkinsonism by L-dopa.

Penders and Delwaide (1971)  Blink reflex studies in patients with Parkinsonism before and during therapy

Brodsky et al (2004) '' Glabellar and palmomental reflexes in Parkinsonian disorders. ''

Further Research

References