Figure 4.

Stimulus response functions of weight calibrated pin prick stimulation before (Day 0) and up to three days (Day 1-3) after UVB irradiation. There were no statistical significant differences between the two UVB irradiation sessions therefore the data from the two sessions are plotted together (rmANOVA, p > 0.05). The VAS increased as the intensities increased (rmANOVA, Bonferonni, p < 0.001). The VAS assessed at baseline was increased by UVB irradiation assessed at all three days (rmANOVA, Bonferonni, p < 0.001).