TABLE 2.
Etiology of palatal tremor in previous case series and the present study
| Study, Year | Type of Article | Sample Size | SPT:EPT | Etiology of SPT | % (n) |
|---|---|---|---|---|---|
| Deuschl et al, 1990 6 | Review article | 287 | 210:77 | Vascular | 54.86 (115) |
| Trauma | 10.95 (23) | ||||
| Tumor | 9.04 (19) | ||||
| Multiple sclerosis | 4.28 (9) | ||||
| Degenerative | 3.33 (7) | ||||
| Encephalitis | 2.38 (5) | ||||
| Other | 15.23 (32) | ||||
| Stamelou et al, 2012 4 | Case series | 17 | 7:10 a | Genetic | 71.43 (5) |
| Vascular | 14.29 (1) | ||||
| Not specified | 14.29 (1) | ||||
| (Diaphragmatic myoclonus) | |||||
| Nagappa et al, 2018 7 | Case series | 27 | 26:1 | Genetic | 34.65 (9) |
| Vascular | 23.07 (6) | ||||
| Trauma | 11.53 (3) | ||||
| Infections | 7.69 (2) | ||||
| Atypical demyelination | 7.69 (2) | ||||
| Posterior fossa tumor | 7.69 (2) | ||||
| Sarcoidosis | 3.84 (1) | ||||
| Present study, 2020 | Case series | 22 | 17:5 | Vascular | 29.41 (5) |
| Degenerative | 17.64 (3) | ||||
| Probably genetic | 17.64 (3) | ||||
| Posttraumatic | 11.76 (2) | ||||
| Postinfective | 11.76 (2) | ||||
| Postradiation | 5.88 (1) | ||||
| Tardive syndrome | 5.88 (1) |
SPT, symptomatic palatal tremor; EPT, essential palatal tremor.
a
Psychogenic palatal tremor, 7 patients; palatal tics, 2 patients; primary EPT, 1 patient.