Sperm cramps refer to the painful or uncomfortable sensation some men experience during or after ejaculation. It is also known as epididymal hypertension. The discomfort can appear as aching or cramping in the testicles or the surrounding area. Sperm cramps can range from mild discomfort to severe pain that lasts not only hours but also days. While not all men experience sperm cramps, those who do may have varying levels of discomfort. The exact cause of sperm cramps is still unknown, but researchers have found that infections of the reproductive organs, like epididymitis (inflammation of the epididymis) or urinary tract infections, cause pain or cramping sensations in most cases. If pain consistently occurs during or after ejaculation, it is crucial to consult a healthcare professional for further evaluation.