Diseases associated with HHV-5 include mononucleosis, and pneumonia. People with infectious mononucleosis, lymphoproliferative diseases, or mycoplasma pneumonia are more susceptible to this condition. Symptoms may be similar to those seen in infectious mononucleosis (caused by EBV). About 60 percent of cases occur after a viral illness, such as mononucleosis or gastroenteritis. Infections proposed include mononucleosis, "Chlamydophila pneumoniae", human herpesvirus 6, and Lyme disease. Infectious mononucleosis "(glandular fever)" affects the cervical lymph nodes which become swollen. It has not been found to be useful for infectious mononucleosis due to EBV. The signs and symptoms of infectious mononucleosis vary with age. A nonallergic amoxicillin rash may also be an indicator of infectious mononucleosis. In less than one percent of cases of infectious mononucleosis splenic rupture may occur. In patients with infectious mononucleosis, more than 60% of whom develop cold agglutinins disease. Rarely, pancytopenia may have other causes, such as mononucleosis or other viral diseases. Infectious mononucleosis is generally self-limiting, so only symptomatic or supportive treatments are used. His career progress was slowed when he contracted mononucleosis. J.D. LaRue (Kiel Martin) who was supposedly suffering from mononucleosis.