Table 3. Adverse effects (AEs) in the real transcranial direct current stimulation group (n=25).
| Effect | Total, n (%) | Mild, n (%) | Moderate,
n (%) |
Significant,
n (%) |
Very high,
n (%) |
Site of
AE a |
|---|---|---|---|---|---|---|
| Itching | 19 (76%) | 14 (73.7%) | 4 (21.1%) | 1 (5.2%) | 0 | C |
| Tingling | 17 (68%) | 13 (76.5%) | 3 (17.6%) | 1 (5.9%) | 0 | C |
| Scalp Pain | 2 (8%) | 2 | 0 | 0 | 0 | A |
| Burning | 2 (8%) | 1 (50%) | 1 (50%) | 0 | 0 | C |
| Vertigo | 0 | 0 | 0 | 0 | 0 | NA |
| Pinching | 4 (16%) | 2 (50%) | 2 (50%) | 0 | 0 | C |
| Metallic/iron
taste |
0 | 0 | 0 | 0 | 0 | NA |
| Fatigue | 2 (8%) | 2 (100%) | NA | NA | NA | NA |
| hypomania | 0 | 0 | 0 | 0 | 0 | NA |
| Heat | 0 | 0 | 0 | 0 | 0 | NA |
| headache | 4 (16%) | 3 (75%) | 1 (25%) | 0 | 0 | NA |
| Skin irritation | 10 (40%) | 8 (80%) | 2 (20%) | 0 | 0 | A |
| Dizziness | 0 | 0 | 0 | 0 | 0 | NA |
| Discomfort | 5 (20%) | 3 (60%) | 2 (40%) | 0 | 0 | NA |
| Tolerability | ||||||
| Very high | 23 (92%) | NA | NA | NA | NA | NA |
| Moderate | 4 (16%) | NA | NA | NA | NA | NA |
| Mild | 2 (8%) | NA | NA | NA | NA | NA |
| None | 0 | NA | NA | NA | NA | NA |
NA, not applicable. aC, under cathode; A, under anode. Very high tolerability indicates the subject could easily tolerate the tDCS sessions.