Orchitis is a painful inflammation of the testicle, and is caused by bacteria or a virus. In the beginning there is a localised area of pain and swelling, usually only in one testicle, but often spreading to the other testicle, and may affect the entire groin area.
Here are some symptoms which could indicate you are suffering from orchitis:
- Painful urination and painful ejaculation
- Blood in the semen
- Swollen lymph nodes in the groin