Complications of Mumps
Mumps can occasionally cause complications, especially in adults.
Complications can include:
- inflammation of the testicles (orchitis) in males who have reached puberty; this may lead to a decrease in testicular size (testicular atrophy)
- inflammation of the ovaries (oophoritis) and/or breast tissue (mastitis)
- inflammation in the pancreas (pancreatitis)
- inflammation of the brain (encephalitis)
- inflammation of the tissue covering the brain and spinal cord (meningitis)
Neither inflammation of the testicles nor inflammation of the ovaries caused by mumps has been shown to lead to infertility.
- Vaccine (Shot) for Mumps
- Complications for Healthcare Providers
- Mumps: Questions and Answers pdf icon[4 pages]external icon
Ready-to-print version of one of the CDC-reviewed Q&A materials located on Immunization Action Coalition’s websiteexternal icon.
Page last reviewed: March 15, 2019