Development of Tics
Most motor tics begin around age 7 and phonic or vocal tics more commonly present at a later age of around 11. These tics tend to get worse at the stage of puberty but become more stable into adulthood. It is important to remember that the severity, intensity and frequency of the tics will vary across the child’s life (Robertson & Cavanna, 2008). The cause of Tourette’s is still somewhat unknown but thought to be an inherited developmental disorder (Leckman et al, 2001). Although stress and anxiety is not thought to be the cause of tics, it can play a large part in exacerbating them (Chowdhury, 2004).