What are the causes of chronic pain? A persistent pain for three months is chronic pain. It can happen constantly and it could be intermittently present. It could happen in any part of the body. The chronic pain may hinder daily tasks like being productive, living a social life as well as taking care of you or your loved ones. This can cause anxiety, depression and even trouble sleeping, which can make your pain get worse. It is difficult to break this pattern. https://www.institut-upsa-douleur.org/blog/