Periodic Fever, Aphthous Stomatitis, Pharyngitis, Cervical Adenitis (PFAPA) is a syndrome that consists of recurrent episodes of fever, sore throat, mouth sores and swelling of the glands in the neck. The frequency of PFAPA is not known, but the disease appears to be more common than originally thought, and may be the most common recurrent fever (autoinflammatory) syndrome that does not come from an infection. Both males and females and all ethnic groups can develop PFAPA. PFAPA usually starts in early childhood, between the ages of two to five years. Occasionally PFAPA may develop at an older age, including rare cases in adults.