Epididymitis is most commonly characterized by pain in the groin area, which may be accompanied by swelling and increased warmth. Typically, unilateral testicular pain and tenderness develop gradually. If epididymitis is caused by a urinary tract infection, symptoms may include painful urination or a frequent and urgent need to urinate. In cases where the condition results from a sexually transmitted infection, patients might experience colored penile discharge, blood in semen, or lower abdominal pain and discomfort. Fever is an uncommon symptom. Epididymitis is considered chronic if it lasts longer than six weeks or recurs. Symptoms of chronic epididymitis may emerge slowly, and occasionally, its underlying cause cannot be identified.