4.7. The SjBoT Injection Paradigm
pain
The BoNT-A (onabotulinum) and placebo treatment consisted of between 20 and 40 subcutaneous injection sites placed at a mutual distance between 1.5 cm and 2.0 cm into the skin area of onset of maximum pain according to the SjBoT injection paradigm: the skin area innervated by the first branch and a small part of the second and third branch of the trigeminal nerve for treatment of the trigeminal region (