Footnotes

• Contributors All authors contributed equally to the concept and writing of the manuscript.

• Funding All research at Great Ormond Street Hospital NHS Foundation Trust and UCL Great Ormond Street Institute of Child Health is made possible by the NIHR Great Ormond Street Hospital Biomedical Research Centre.

• Competing interests None declared.

• Provenance and peer review Not commissioned; externally peer reviewed.

• Author note Tourette Action UK: Factsheet: Tic attacks and how to cope with them (for families). https://www.tourettes-action.org.uk/storage/downloads/1602166028_Factsheet---TicAttacks.pdf