Some children experience chronic pain that is related to damage or diseases that affect the nerves that send pain signals. This is known as neuropathic pain. This is not well understood and can be difficult to diagnose. It can often produce unusual feelings such as sensitivity of the skin to light touch. Neuropathic pain is often severe and difficult to treat, and can affect quality of life for the child and family. This study aims to better characterise the symptoms and signs, and impact of neuropathic pain in children.