ComplicationsBy Mayo Clinic staff
In the rare cases in which CMV causes a healthy person to become very sick, the infection may cause the following complications:
- CMV mononucleosis. This syndrome resembles infectious mononucleosis. Classic mononucleosis is caused by a different virus called Epstein-Barr virus (EBV). If you have signs and symptoms that resemble mononucleosis — a sore throat, swollen glands and tonsils, fatigue, and nausea — your doctor will test you for the antibody your body makes to fight off EBV. If it's absent, there's a good chance CMV is causing your symptoms.
- Intestinal complications. CMV infection in your intestines can result in diarrhea, fever and abdominal pain; inflammation of your colon; and blood in your stool.
- Liver complications. CMV can cause abnormal functioning of your liver and an unexplained fever.
- Nervous system complications. A variety of neurological complications have been reported as a result of CMV infection in the nervous system. These may include inflammation of your brain (encephalitis).
- Lung complications. CMV can cause inflammation of your lung tissue (pneumonitis).
Complications arising from newborn CMV infection include:
- Hearing loss
- Eye abnormalities, including central vision loss, scarring of the retina, an inflammation of the light-sensing layer of the eye (retinitis), and swelling and irritation of the eye (uveitis)
- Mental disability
- Attention-deficit/hyperactivity disorder
- Lack of coordination
- Small head
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