Figure 3.

Clinical characteristics and stages of varicella zoster virus (VZV) infection related to the pathophysiology of post-herpetic neuralgia (PHN). All images are original with the exception of: *the left table (a), which was reprinted, with small adaptations, from DaSilva and Acquadro (2005), with permission from SNELL Medical Communication Inc.; and **the top images in illustration 4 (chronic pain phase), which were reprinted, with minimal adaptations, from Oaklander (2008), with permission from Elsevier, with special credit to Oaklander (2001), also reprinted with permission from Elsevier.