There are a variety of reasons why nails change colour. The most common include:

•   Onychocryptosis commonly known as "ingrown nails"  can affect either the fingers or the toes. This occurs as a result of either side of the nail cutting into one or both sides of the nail bed, which can cause inflammation and lead to infection.
  
  • The main cause of ingrown nails is pressure from shoes or the ground against the toe
  • The movements involved in walking or other physical activities can contribute to the problem.
  • Treatment:
    • Depending on the severity of the infection the nail can either be trimmed or a portion of the nail can be surgically removed and the nail matrix or 'root' treated with phenol which prevents regrowth of that portion.
• Onychomycosis (fungal nails) is a contagious infectionof the nail caused by fungal organisms (Trichophyton rubrum or T. mentagrophytes).
  • It can result in  discolouration, thickening, chalkiness or crumbling of the nails.
  • Treatment:
    • Can be treated by topical lotions such as Lamisil and tea tree oil for conservative treatment. For more powerful treatment oral medications can be perscribed by your GP but are rarely used due to severe side effects.

Last updated on April 13, 2010 by Emma Hoult