Carlos Morra and Ernst Franzek: Psychopathological Symptoms
Palmomental reflex
 

Definition: Twitch (contraction) of the chin (mentalis) muscles in response to a stroke of the thenar eminence (Owen and Mulley, 2002).

Exploration: A twitch in the chin muscles as a reaction to a proximal to distal stroke of the thenar eminence with a sharp object indicates the presence of the “palmomental reflex.” 

References:

Owen G, Mulley GP. The palmomental reflex: a useful clinical sign? J Neurol Neurosurg Psychiatry 2002; 73: 113–5.

Carlos Morra and Ernst Franzek

March 23, 2017