Fig. 2From: Occipital nerve block is effective in craniofacial neuralgias but not in idiopathic persistent facial painIndividual response to ONBs indicated as remaining pain in percent of the initial pain before an ONB. a trigeminal neuralgia, b trigeminal neuropathic pain, c persistent idiopathic facial pain. In the following patients, response was set to values between 95 and 99% instead of the actual 100% for the sake of legibility: TN2, TNP1, FP3, FP4_1, FP5Back to article page