Shingles, also known as herpes Zoster, is an infection of a nerve and the skin around it. It's caused by the varicella-zoster virus, which also causes chickenpox.
It's estimated that around one in every four people will have at least one episode of shingles during their life.
Shingles isn't usually serious, but see your GP as soon as possible if you recognise the symptoms. They'll usually be able to diagnose shingles based on your symptoms and the appearance of the rash.
Early treatment may help reduce the severity of your symptoms and the risk of developing complications.