Rub epilepsy: a somatosensory evoked reflex epilepsy induced by prolonged cutaneous stimulation.
To delineate rub epilepsy--a type of reflex epilepsy induced by prolonged or repetitive cutaneous stimulation in a circumscribed area of the body--three cases are presented, as well as one of tooth brushing epilepsy for comparison. In all three cases of rub epilepsy, cutaneous stimuli in a particular body area on the left side initially induced a sensory jacksonian march in the middle of, or in close vicinity to, the trigger zone, which led to subsequent unilateral tonic contractions with intact consciousness. By contrast, a motor jacksonian seizure without sensory aura was induced in the patient with tooth brushing epilepsy. A review of cases with rub epilepsy, including those in this paper, disclosed a striking consistency in clinical manifestations. The symptomatology of the induced seizures indicates a propagation of epileptic discharges from the postcentral gyrus to the supplementary motor area. Rub epilepsy is proposed as a separate clinical entity, clearly demarcated from other somatosensory evoked reflex epilepsies such as startle and tooth brushing epilepsy.
Kansai Regional Epilepsy Center, Utano National Hospital, Kyoto, Japan. PEH06237@nifty.ne.jp
K
K
Kanemoto
Y
Y
Watanabe
T
T
Tsuji
M
M
Fukami
J
J
Kawasaki
D000328:Adult; D001921:Brain / Q000503:physiopathology*; D004569:Electroencephalography; D020195:Epilepsy, Reflex / Q000209:etiology* / Q000503:physiopathology*; D005260:Female; D006801:Humans; D015225:Magnetoencephalography; D008297:Male; D010812:Physical Stimulation / Q000009:adverse effects*; D012867:Skin / Q000503:physiopathology*