1. Other risk factors include inguinal hernias, Klinefelter syndrome, and mumps orchitis . 2. Autoimmune orchitis is rare in humans, compared to anti-sperm antibodies. 3. Orchitis is a condition of testicular pain involving swelling, inflammation and possibly infection.4. Orchitis is also common in men.5. Up to 20 % of cases can have genitourinary involvement; orchitis and epididymitis are most common. 6. Injection of sperm antigens causes inflammation of the testis ( auto-immune orchitis ) and reduced fertility. 7. Orchitis can be caused by an autoimmune reaction ( autoimmune orchitis ) leading to a reduction in fertility.8. Orchitis can be caused by an autoimmune reaction ( autoimmune orchitis ) leading to a reduction in fertility. 9. If the inflammation spreads to the testicle, the condition may be reclassified as epididymo-orchitis or orchiepididymitis. 10. Completing his course at Upavon, McNamara was posted back to Egypt in August, but was hospitalised on 8 September with orchitis .
