Table 4. Individual Changes in Severity of Tics and Associated Behaviors in Eight Patients with Tourette Syndrome.
| Patients | Duration of Follow-up (Months) | YGTSS* | YBOCS*** | HDRS | HARS | ||||
|---|---|---|---|---|---|---|---|---|---|
| Before Surgery | At Last Follow-up** | Before Surgery | At Last Follow-up | Before Surgery | At Last Follow-up | Before Surgery | At Last Follow-up | ||
| 1 | 107 | 36 | 10 (72%) | 29 | 8 | 10 | 15 | 0 | 0 |
| 2a | 95 | 41 | 32 (20%) | 15 | 0 | 0 | 0 | 5 | 1 |
| 3b | 84 | 43 | 40 (7%) | 20 | 27 | 5 | 4 | 20 | 15 |
| 4 | 51 | 50 | 40 (20%) | 12 | 10 | 3 | 3 | 4 | 3 |
| 5 | 8 | 38 | 22 (44%) | 0 | 0 | 4 | 1 | 5 | 3 |
| 6 | 16 | 46 | 7 (85%) | 5 | 5 | 0 | 0 | 2 | 1 |
| 7c | 37 | 25 | 25 (0%) | 0 | 0 | 3 | 15 | 3 | 3 |
| 8 | 6 | 43 | 14 (67%) | 20 | 22 | 2 | 0 | 3 | 3 |
Abbreviations: HARS, Hamilton Anxiety Rating Scale; HDRS, Hamilton Depression Rating Scale; YBOCS, Yale–Brown Obsessive–Compulsive Scale; YGTSS, Yale Global Tic Severity Scale.
*
Total tic severity does not include impairment score and is based on the worst-ever tic severity measured at the time of interview.
**
Percent improvement in the YGTSS Total Tic Score.
***
Obsessive–compulsive symptom severity is based on the total obsessive–compulsive severity measured at the time of interview.
a
Electrodes were removed because of infection.
b
Electrodes were removed because of lack of therapeutic benefit.
c
This patient does not have any vocal tics.