Table 6 Treatment-related adverse events
From: Botulinum toxin: could it be an effective treatment for chronic tension-type headache?
BTX-A | Placebo | |
|---|---|---|
Hematoma at site of injection | 1 | 1 |
Blepharoptosis | 1 | 0 |
Itching at site of injection | 0 | 1 |
Pain at site of injection | 1 | 1 |