What does epididymitis mean?
Epididymitis is the medical term for inflammation of the epididymis, the tightly coiled duct that sits along the back of each testicle and stores and transports sperm. It is most often caused by a bacterial infection — commonly sexually transmitted organisms such as chlamydia or gonorrhoea in younger men, or urinary tract pathogens such as E. coli in older men — and typically produces gradual onset of scrotal pain, swelling, and tenderness, sometimes with fever or urinary symptoms. Clinicians distinguish acute epididymitis, which develops over days, from chronic forms in which discomfort persists for months. Treatment usually involves antibiotics, rest, scrotal support, and anti-inflammatory measures. The word derives from Greek roots meaning 'upon the twins', a reference to its position atop the testicles. It belongs firmly to medical register, appearing in clinical records, urology literature, and patient-health resources rather than casual conversation.
nounInflammation of the epididymis, the coiled tube at the back of the testicle that stores and carries sperm, typically caused by bacterial infection including sexually transmitted infections.
- Inflammation of the epididymis, usually from bacterial infection, causing scrotal pain and swelling.
"The physician diagnosed epididymitis after the patient presented with scrotal pain and swelling."
"Untreated chlamydia can lead to epididymitis in men."
"He was placed on antibiotics for two weeks to clear up the epididymitis."
The Greek-style plural 'epididymitides' appears in formal medical writing; 'epididymitis' is also treated as uncountable, so a plural is rarely needed.
"Both cases of epididymitides were traced to untreated urinary infections."
The 'didym' in epididymitis is Greek for 'twin' — a nod to the paired testicles — making this one of medicine's more poetic coinages.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of epididymitis
Epididymitis combines 'epididymis' — from Greek epi ('upon') plus didymos ('twin', a classical term for the testicles) — with the suffix '-itis', denoting inflammation, which entered medical Latin from Greek. The term was formed within the anatomical nomenclature tradition of early modern European medicine. It shares its root with epididymis, epididymal, and related anatomical vocabulary built on the Greek didym- stem.
How epididymitis is actually used
A formal medical term used almost exclusively in clinical or health-information contexts; in everyday speech people describe the condition rather than name it. The adjective form is 'epididymal'.
Easily confused with epididymitis
Orchitis is inflammation of the testicle itself, whereas epididymitis is inflammation of the epididymis, the tube behind the testicle; the two often occur together as epididymo-orchitis.