Fungal nail infection
Many people develop a fungal nail infection at some point in their life. It's not usually serious, but can be unpleasant and difficult to treat.
The infection develops slowly and causes the nail to become discoloured, thickened and distorted.
Toenails are more frequently affected than the fingernails.
The medical name for a fungal nail infection is onychomycosis.
Information from NHS Choices, available online at http://www.nhs.uk/conditions/Fungal-nail-infection/Pages/Introduction.aspx
Treatment will need to be discussed during the appointment.