KFS Awareness Day is observed worldwide every August 6 to promote understanding of Klippel-Feil syndrome (KFS), a rare congenital disorder characterized by the abnormal fusion of two or more cervical vertebrae. The day was established by the Klippel-Feil Syndrome Alliance in 2012, marking the centenary of the syndrome's first description by French physicians Maurice Klippel and André Feil. KFS is associated with genetic mutations and can lead to various complications, including limited neck movement, headaches, and nerve pain. The condition is often difficult to diagnose due to accompanying abnormalities like scoliosis and heart defects. Treatment focuses on symptom management, including physical therapy and pain relief, with surgery considered in severe cases. The observance aims to enhance awareness among medical professionals and the public, advocating for improved diagnosis and care for those affected.