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. Author manuscript; available in PMC: 2016 Jun 1.
Published in final edited form as: Pain Pract. 2014 May 2;15(5):423–432. doi: 10.1111/papr.12202

Table 1.

Adverse effects.

ADVERSE EFFECT ACTIVE SHAM
FREQUENCY FREQUENCY
Headache 1/5 (20%) 1/4 (25%)
Neck Pain 0 1/4 (25%)
Scalp Pain 1/5 (20%) 0
Scalp Burning Sensation 2/5 (20%) 0
Scalp Tingling 5/5 (100%) 3/4 (75%)
Skin Redness 4/5 (80%) 2/4 (50%)
Sleepiness 3/5 (60%) 1/4 (25%)
Trouble concentrating 1/5 (20%) 0
Acute mood change 1/5 (20%) 0
Nausea 1/5 (20%) 0
Dizziness 0 2/4 (50%)
Itching 1/5 (20%) 0
Pelvic Tingling 1/5 (20%) 0