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Related to palmomental reflex: Babinski reflex, snout reflex, Glabellar reflex, grasp reflex, Hoffman's sign
unilateral (sometimes bilateral) contraction of the mentalis and orbicularis oris muscles caused by a brisk scratch made on the palm of the ipsilateral hand.
Synonym(s): palm-chin reflex
Etymology: L, palma + mentum, chin, reflectere, to bend back
an abnormal neurological sign, elicited by scratching the palm of the hand at the base of the thumb, characterized by contraction of the muscles of the chin and corner of the mouth on the same side of the body as the stimulus. It is occasionally seen in normal individuals, but an exaggerated reflex may occur in patients with pyramidal tract disease, latent tetany, increased intracranial pressure, central facial paresis, and dementia. Also called palm-chin reflex.
palmomental reflexPalm-chin reflex Neurology A unilateral contraction of the mentalis and orbicularis oris triggered by brisk scratching of the ipsilateral palm
Radovici,André, 20th century French physician.
Marinesco-Radovici reflex - Synonym(s): Radovici sign
Radovici reflex - Synonym(s): Radovici sign
pal·mo·men·tal re·flex(palmō-mentăl rēfleks) [MIM*167700]
Unilateral (sometimes bilateral) contraction of mentalis and orbicularis oris muscles caused by a brisk scratch made on palm of ipsilateral hand.