Your body needs some sodium to function properly because it: 1  Helps maintain the right balance of fluids in your body. 2  Helps transmit nerve impulses. 3  Influences the contraction and relaxation of muscles.
Some of the conditions that can cause a testicle lump, swelling, and/or pain include: 1  Torsion of the testicle. 2  Injury. 3  Infection. Hydrocele. 4  Varicocele. Epididymal cyst/spermatocele.  Inguinal 1  hernia. Kidney  stones.
Abdominal pain may occur before testicle pain in some conditions. Common causes of testicle pain include: 1  Injury. 2  Infection or swelling of the sperm ducts (epididymitis) or testicles (orchitis).  Twisting of the testicles that can cut off the blood supply (testicular torsion). It is most common in young men between 10 and 20 years old.