Does epididymitis cause erectile dysfunction?

Yes it can.

Not certain but interested in the true facts!

I can only speak from eight years experience. It can prevent a man from wanting intercourse and yes there are times the blood flow from prostatitus (a linked cause so check it out if you havent) can be restricted and usually thats a sign things are about to get more painful but not erectile dysfunction in its known form. Just complications with the condition. If you know someone with this be sensetive and understanding that at times they may not be receptive to being stimulated just from the fear of pain. Try eating raw honey a couple spoons a day. I wont promise a miracle but it may help the swelling and pain. It did reduce it for me a little.