Fig. 3.

Efficacy/tolerability mapping on the basis of one prospective randomized controlled trial directly comparing the topical 5% lidocaine medicated plaster and systemic pregabalin in the treatment of postherpetic neuralgia [17, 19]. Responder rates were defined as a reduction in pain intensity of at least 2 points or an absolute value of 4 or less on the 11-point numerical rating scale over the previous 3 days after 4 weeks of treatment