Outbreaks are rare. Adolescents usually report loss of appetite, weakness, and sore muscles. The incubation period for adults is between 10 and 60 days. The incubation period for children and adolescents is between 7 and 4 days. An examination of the blood under a microscope may reveal an increased number of white blood cells known as lymphocytes.
Mononucleosis can last from one to several weeks.
The disease is very rarely fatal. Rest is the usual treatment. April is Sexually Transmitted Disease Awareness month in the United States. For information on other sexually transmitted diseases, see herpes , chlamydia , gonorrhea and syphilis . Always check with your doctor if you have any questions or concerns about a specific condition.