Fig. 6. Effects of mexiletine on allodynia (A ) and hyperalgesia (B ) of mice with postherpetic pain–related responses. Mexiletine at doses of 10, 20, and 30 mg/kg and vehicle were injected intraperitoneally on day 30 after inoculation. The contralat-eral hind paw was given no inoculation. Data are presented as mean ± standard error of the mean of four animals. *P < 0.05 as compared with preadministration values (Dunnett test).