The duration of sciatica can vary greatly depending on the underlying cause and individual factors. In most cases, acute sciatica caused by a herniated disc or muscle strain may last for a few weeks to a couple of months. However, some individuals may experience chronic sciatica that lasts for several months or even years. It is important to consult with a healthcare professional to determine the specific cause of sciatica and develop a personalised treatment plan to alleviate symptoms and promote healing.