This site is intended for healthcare professionals

Go to /sign-in page

You can view 5 more pages before signing in


Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

Possible complications of mumps include:

  • meningo-encephalitis - most frequent complication of infection in children.
    • symptomatic viral meningeal irritation occurs in about 15% of cases of mumps infection
    • may precede or follow parotitis or may even occur without salivary gland enlargement (1)
    • encephalitis is much less common, occuring about once in a thousand patients (2,3)
  • bilateral or unilateral sensorineural deafness occurs with frequency varying from one in 3400 cases to one in 20,000 (1)
  • orchitis - in up to 25% of adult male patients (1), unilaterally in 80% of these; the predominance of unilateral orchitis means that infertility is relatively rare but 13% of patients with bilateral disease may have hypofertility (2)
  • oophoritis - occurs in about 5% of female patients (1)
  • pancreatitis - this is a rare complication of childhood infection. It may be seen in up to 7% of infections (1)
  • other possible complications include (1) (2):
    • episcleritis
    • uveitis
    • optic neuritis
    • arthritis
    • nephritis
    • thyroiditis
    • myocarditis
    • idiopathic thrombocytopenic purpura
    • increased risk of a miscarriage in the 1st 12 weeks of pregnancy (1)


Related pages

Create an account to add page annotations

Annotations allow you to add information to this page that would be handy to have on hand during a consultation. E.g. a website or number. This information will always show when you visit this page.

The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.


Copyright 2024 Oxbridge Solutions Limited, a subsidiary of OmniaMed Communications Limited. All rights reserved. Any distribution or duplication of the information contained herein is strictly prohibited. Oxbridge Solutions receives funding from advertising but maintains editorial independence.