From: Botulinum toxin type A with or without needle electromyographic guidance in patients with cervical dystonia
Adverse events
Group A
Group B
Dysphagia
10 (31.3 %)
6 (16.7 %)
Neck muscle weakness
5 (15.6)
Discomfort at injection site
3 (9.4 %)
7 (19.4)
Dry mouth
2 (6.3 %)
3 (8.3 %)
Patients with ≥1 adverse events
17 (53.1 %)
19 (52.8 %)