Hyperfamiliarity for Unknown Faces Syndrome Following Encephalitis

Hyperfamiliarity for unknown faces (HFUF) is a rare disorder in which unfamiliar faces seem familiar. We report one case of HFUF syndrome. A 34-year-old woman was admitted as encephalitis with seizure. She repeatedly reported to her husband that all faces around her looked familiar. Our case supports the studies that show a differential contribution of two hemispheres in face recognition. Here we report this case for the first time in Korea.