Trigeminal Neuralgia (TN) is one of the most painful conditions ever known to humankind. The disorder is rather rare, however, many organizations raise public awareness of it. Observance of International Trigeminal Neuralgia Awareness Day on October 7 is one of the ways to educate people about TN.
World Smile Day is an informal holiday celebrated on the first Friday of October. It was created by the American commercial artist Harvey Ball in 1999. Ball is credited with creating the smiley face in 1963.