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.
Nearly all testicular lumps cause noticeable swelling and changes in the texture of your testicle. Other symptoms vary, depending on the underlying cause of your testicular lump: A varicocele rarely causes symptoms. If it does cause symptoms, the affected testicle may feel heavier than the other testicle or the lump may feel like a small sac of worms. A hydrocele is painless in infants, but it can cause a feeling of abdominal pressure in older boys and men.