Testalgia is the medical term for long-term pain in the testes. Pain in the testes must persist for at least three months to be diagnosed as testalgia. This condition can be caused by bodily injury, particularly to the lower back, infection, surgery, and several other medical conditions. Cancer and testicular torsion are known to cause testalgia in some cases, as are complications following a vasectomy.
Testalgia is also known as orchialgia, orchalgia, orchiodynia, and orchineuralgia.