What is Postherpetic Neuralgia?
Herpes zoster is a virus that causes chicken pox in childhood. In adult life, if it recurs, it causes “shingles”, an outbreak of small lesions on the skin. They usually occur in the distribution of a nerve root. If the nerve root is the trigeminal nerve, the outbreak will occur on the face, usually in V1, the forehead and eye. The outbreak is painful. If you have this you should seek immediate medical attention, since early drug treatment can prevent chronic pain.