The Worst pain one can have is pain of the nerves, like tenne described.I had baaaaaaaadddddd herpes zoster once, and you wouldnt believe the pain I had when it was half-healed and i started to scratch some.Seriously, I never cry because of pain, but at that time a few tears erupted from my eyes anyway.I also still dont feel anything in the areas of skin that were affected by the zoster the worst...