What are other clinical findings or complications that may be associated with mumps?
In 50% – 60% of cases of clinical mumps, cerebrospinal fluid (CSF) pleocytosis occurs. However, clinical evidence of meningitis or encephalitis appears in < 10% of patients with mumps. Serious sequelae are rare. For example, deafness after mumps occurs in 0.5 to 5.0 per 100,000 cases. Death occurs in < 2% of mumps encephalitis cases. Orchitis occurs in about 25% of adolescent and adult males with mumps and is rare in prepubescent males. One or both testes may be involved, with lower abdominal pain, fever, and chills and possibly epididymitis. The involved testis and adjacent skin become swollen and red. Orchitis occurs within 1 week of parotitis and usually lasts 4 days. Infertility is rare even when both testes are involved. Oophoritis occurs in 5% of post pubertal females with mumps and is characterized by pelvic pain and tenderness. Infertility generally does not occur. Mastitis may also occur.
In 50% – 60% of cases of clinical mumps, cerebrospinal fluid (CSF) pleocytosis occurs. However, clinical evidence of meningitis or encephalitis appears in < 10% of patients with mumps. Serious sequelae are rare. For example, deafness after mumps occurs in 0.5 to 5.0 per 100,000 cases. Death occurs in < 2% of mumps encephalitis cases.
