Motor skills impairment has been reported in children with Tourette Syndrome. Past research has found fine hand motor impairment, decreased psychomotor speed and handwriting deficits (Khalifa & Eklund, 2017) as well as impaired timing of motor control (Graziola, Pellorca, et al. 2020). Not all studies have found deficits in fine motor skills, however (cf the review by Kalsi, Tambelli, et al., 2015).

Until recently, however, no study investigated whether motor control could be better than normal (supranormal) in individuals with tic disorders. Ganos, Neumann, and colleagues provide a clinical description of patients with tic disorders who are often able to control specific muscle contractions to a degree that most humans typically cannot.

Reference:

Ganos G, Neumann W-J, Müller-Vahl KR, Bhatia KP, Hallett M, Haggard P, and Rothwell J. The Phenomenon of Exquisite Motor Control in Tic Disorders and its Pathophysiological Implications. 2021 Jun;36(6):1308-1315. doi: 10.1002/mds.28557.