Retrospective study of PFAPA < 18yrs, 336 pts, Boys=Girls, peak onset ~age 1 yrs (less w/ yrs); 90% 1st Sxs under 5 yrs & <3% after age 10 yrs, Common Sxs: pharyngitis w fever, Cx adenitis, aphthous stomatitis, atyp skin rash. Incidence 0.86/10K/Yr https://t.co/1Mrp9bMnuE