Essential Palatal Tremor929-1

Figure 1. Aetiology of 287 cases with RPM. Note that more than a quarter belong to essential RPM

Figure 2. Distribution of 287 cases with symptomatic and essential RPM according to the year of publication. Diamonds symptomatic RPM (n=210) squares essential RPM (n=77)

Figure 3. The “myoclonic triangle.”

Gallet, J. (1927) Le Nystagmus du voile: Le syndrome myoclonique de la calotte protuberantielle thesis. Paris.

Gullain, G. Mollaret, P. (1931) Deux cas de myoclonies synchrones et rythmees velo-pharyngo-laryngo-oculo-diaphragmatiques. Le Probleme antomique et physiopathologique de ce syndrome. Revue Neurologique, 2, 545-566.

Klein, H. (1907) Zur Patholgoic de kontinuierlichen rhythmischen Krampfe der schlingmuskulatur (2 Falle von Erweichungscherden im Kleinhirn). Neurologisches Centralblatt, 26, 245-254.

Spencer, H.R (1986) Pharnygeal and laryngeal “nystagmus”. Lancet, II, 702.

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