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  • Drug-induced and psychogenic resting suprahyoid neck and tongue tremors.

Drug-induced and psychogenic resting suprahyoid neck and tongue tremors.

Movement disorders : official journal of the Movement Disorder Society (2008-01-11)
Jong Sam Baik, Chul H Lyoo, Jae H Lee, Myung Sik Lee
ABSTRACT

We describe three patients who presented with 4 to 5 Hz tremors of the suprahyoid region of the neck. Two developed their tremors in association with levosulpiride treatment. When they opened their mouths, the neck tremors disappeared; no tongue tremors were observed. However, a videofluoroscopic examination showed the presence of tongue tremors at rest. The remaining patient had a psychogenic tremor.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
(S)-(−)-Sulpiride, ≥98% (titration)
Supelco
(S)-(−)-Sulpiride, VETRANAL®, analytical standard