Epididymitis is an inflammation of the epididymis, a coiled tube at the back of the testicle that stores and carries sperm. In men, this condition typically causes pain and swelling in the testicle or scrotum, often accompanied by redness, warmth, and tenderness in the affected area. Other symptoms can include painful urination, frequent urination, fever, and in some cases, a discharge from the penis. Epididymitis is most commonly caused by bacterial infections, including sexually transmitted infections (STIs) such as chlamydia and gonorrhea, or by urinary tract infections. In older men, it may also be linked to an enlarged prostate or bladder issues. Treatment typically involves antibiotics to address the infection, along with pain relievers, rest, and support of the scrotum to reduce discomfort. Early diagnosis and treatment are important to prevent complications such as abscesses or chronic pain.