Neurology -- Gronseth et al. 71 (15): 1183 Figure 111

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Figure 1 Mean age and relative frequency of clinical characteristics and abnormal trigeminal reflexes in classic (CTN) and symptomatic trigeminal neuralgia (STN)

Response to treatment and involvement of first trigeminal division are similar in the two populations. Onset age is lower in CTN than STN (p < 0.0001). Bilateral neuralgia and sensory deficits only occur in STN (p < 0.001). Trigeminal reflexes (TR) are abnormal in STN (87%) and normal in CTN (94%) (p < 0.0001). Data from 10 trials (Class I–III) in 628 patients, detailed in tables e-2 and e-3. *p < 0.001; **p < 0.0001.