How much time does it take for epididymitis to go away on its own?

Depend... Multiple factors contribute to the pace of healing process for epididymitis like the level involved bacterial virulence, timing & effectiveness of antibiotics, personal immune defense ability. If all factors are in their best, a good resolution may take place in 2-3 weeks. If not, the pace of improvement should be individualized. More? Ask doc or contact me at www.healthtap.com/dr-Lin with RQPWJC.