Effects of subcutaneously applied QX-314 and capsaicin on pain behaviors in orofacial area. QX-314 alone, capsaicin alone, or together with QX-314 was administered subcutaneously into the left vibrissa pad and latencies of head withdrawal responses to thermal stimulation were determined at 10, 30, 60, 120, 180, 240, 300, 360 and 420 min. The number of animals was 11. *P < 0.001 versus QX-314.