Acute Parotitis: Evidence‑Based Diagnosis and Management

Viral (Mumps) Parotitis – Clinical Presentation

Typical mumps parotitis usually appears 16–18 days after exposure and is commonly preceded by fever, headache, malaise, myalgia, and anorexia. 1
Only 30–40 % of mumps infections develop the classic acute parotitis; 15–20 % of infections are completely asymptomatic. 2

Viral (Mumps) Parotitis – Diagnostic Testing

Serologic confirmation relies on detection of anti‑mumps IgM antibodies or a ≥4‑fold rise in anti‑mumps IgG between acute and convalescent samples. 4
When IgM may be absent (e.g., in previously immunized individuals), viral isolation or nucleic acid amplification testing (NAAT) from oral or buccal swabs is the preferred diagnostic method. 4

Viral (Mumps) Parotitis – Imaging

Routine imaging is not required for uncomplicated viral parotitis; imaging should be reserved for cases where abscess formation or other complications are suspected. (American College of Radiology recommendation) 3

Viral (Mumps) Parotitis – Management

Antibiotics are not indicated for viral parotitis; treatment is limited to symptomatic care with analgesics and adequate hydration. 1
Clinicians should monitor for complications: aseptic meningitis occurs in 4–6 % of cases, orchitis in up to 38 % of post‑pubertal males, and rare sequelae include deafness, encephalitis, or cranial nerve palsies. 2

Prevention of Mumps‑Related Parotitis

Administration of a two‑dose measles‑mumps‑rubella (MMR) vaccine provides approximately 88 % protection against mumps infection. 4
Presence of anti‑mumps IgG antibodies indicates immunity and can be used to assess vaccine‑derived protection. 4