Medically reviewed by Josephine Hessert, DO Key Takeaways Hydrocele is caused by fluid around the testicles, often in babies but it can happen to adults.Varicocele is caused by enlarged veins in the ...

Autoimmune orchitis is an extremely rare condition that affects males. In autoimmune orchitis, one or both testicles become inflamed. The immune system may produce anti-sperm antibodies, significantly ...