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.
If hernia is present, there may be swelling in the inguinal region with testicular swelling. One Swollen Testicle Causes | Pain, Inflammation in One Testes. Hard Swollen Testicle Causes | Inflamed Testicle Causes. Infant Swollen Testicle | Causes of Swelling in Testicle of Children.