common causes

Last reviewed 01/2018

  • physical causes e.g. burns, scalds, friction
  • viral:
    • herpes zoster
    • herpes simplex
  • impetigo
  • insect bites and papular urticaria
  • scabies
  • pompholyx and bullous eczema
  • drugs eg barbiturate overdose
  • photosensitivity