Triggers

Everyone’s triggers are different, but common triggers include:

  • Cold or dry climate
  • Infections (HIV, post-streptococcal)
  • Stress
  • Dry skin
  • Certain medications including non-steroidal anti-inflammatory drugs (NSAIDs), high-blood-pressure medications, some antidepressants, antimalarial drugs and others
  • Skin injuries including sunburn, cuts and bug bites