Cysts that hurt all the time are usually caused by ruptured cysts, infected cysts, and straining. 1. Cyst rupture: when the cyst ruptures, the cyst will have fluid extravasation, and the specificity of its composition will irritate the surrounding tissues, which will cause the cyst to hurt all the time. 2. Cyst infection: when the cyst fluid accumulates for too long, it will cause infection in the cyst, and the infected fluid will stimulate the body to produce many histamine, leukotriene and other inflammatory mediators, which will cause the cyst to ache all the time when it pools in the local area. 3. Pulling: when the cyst grows gradually, the nerves on the surface of the cyst will not be able to grow, and the nerves on the surface will be pulled and cause pain. The larger the cyst, the more abundant the nerves, the more intense the pain, so the cyst is always painful. If the patient’s cyst keeps hurting, it is recommended to go to the hospital in time to find out the cause of the disease, and then follow the doctor’s instructions for treatment.