“retro”– backwards; “onychia”– nail

caused by ingrowth of the nail plate into the cuticle

common signs are

  • redness and swelling of the affected toe at the base of the nail plate
  • pus or white fluid on either side of the nail
  • little to no new nail growth
  • pain when pressing on the toe

DO NOT ignore these signs, it can lead to skin infections

Ways to avoid

  • Avoid tight footwear (i.e high heels, narrow tip dress shoes)
  • Wear shoes that are the appropriate length for your feet 

Some cases resolve on their own, but if you are unsure, contact a foot clinic to have your toes assessed


  • antibiotics to treat the infection
  • nail removal can be performed at the clinic with local anesthetic, to allow for proper nail growth