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What is it?

Epididymo-orchitis is the inflammation of the epididymis (the tube carrying the sperm from the testicles) and testicles themselves. It’s caused by the spread of bacterial infection. The most common infections in young men are chlamydia and gonorrhoea.

If left untreated, epididymo-orchitis can lead to:

  • chronic epididymo-orchitis (when persistent inflammation of the testicles leads to recurring testicular pain)
  • testicular abscesses (pus collection within the testicles)
  • testicular atrophy (shrinking of the testicles).

Worried about epididymo-orchitis?

Detailed information on STIs is available on the NHS website.

See the FPA website for a range of downloadable leaflets on sexually transmitted infections.

The British Association for Sexual Health and HIV (BASHH) website also features a range of downloadable leaflets on STIs.