Table 1.

Clinical assessments before (baseline) and after an interval of 30 min following cannabis inhalation (follow-up) in combination with oral THC

Symptom	Scale (range)	Baseline	Follow-up
Tics	Total tic score of the Yale Global Tic Severity Scale (0–50)	29	19
	Rush Video-Based Tic Rating Scale (0–20)	17	13
	Parent Tic Questionnaire (0–224)	56	4
Impairment	Impairment score of the Yale Global Tic Severity Scale (0–50)	30	10
Tics + impairment	Yale Global Tic Severity Scale, global score (0–100)	59	29
Premonitory urge	Premonitory Urge for Tics Scale (0–40)	23	15
Quality of life	Gilles de la Tourette Syndrome − Quality of Life Scale (0–100)	42	2
	Visual Analogue Scale of Gilles de la Tourette Syndrome − Quality of Life Scale (0–100)	45	85
Global impairment	Clinical Global Impression − Severity Scale (0–7)	3	2
	Clinical Global Impression − Improvement Scale (0–7)		2