Classification of epididymitis^*

Acute bacterial epididymitis

Secondary to sexually transmitted infection (gonorrhea, chlamydia; less commonly mycoplasma, ureaplasma)

Secondary to urinary tract infection (E. coli and other enteric bacteria)

Nonbacterial infectious epididymitis^¶

Viral (cytomegalovirus infection)

Parasitic (toxoplasmosis)

Noninfectious epididymitis

Traumatic

Autoimmune

Amiodarone-induced

Vasculitis-associated

Idiopathic

* Pathogens listed are examples and not an exhaustive list. Refer to related UpToDate topics on epididymitis for additional content.

¶ Viral and parasitic epididymitis occur primarily in immunocompromised patients.

Adapted from: Nickel JC. Inflammatory and pain conditions of the male genitourinary tract. In: Campbell-Walsh Urology, 11^th ed, Wein AJ, Kavoussi LR, Partin AW, et al (Eds), Elsevier 2016. p.331.

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Classification of epididymitis*

Classification of epididymitis^*