## Abstract Between 1984 and 1992, 559 patients with torticollis were treated with botulinum toxin type A (btx) injections. Twentyβfour of these 559 patients (4.3%) had serological evidence of antibodies to btx by mouse neutralization assay. Some of the 559 patients had only one or two injection se
Use of botulinum toxin type F injections to treat torticollis in patients with immunity to botulinum toxin type A
β Scribed by Dr. Paul E. Greene; Stanley Fahn
- Publisher
- John Wiley and Sons
- Year
- 1993
- Tongue
- English
- Weight
- 492 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0885-3185
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
Fifteen patients with torticollis who had been treated with repeated injections of botulinum toxin type A (botox A) developed antibodies to the toxin. This resulted in loss of benefit in the 13 patients who had improved with botox A injections and failure to develop muscle atrophy after injection in all 15 patients. Patients were then injected with botulinum toxin type F (botox F) in the same muscles that had been injected with botox A. Ten of the 15 improved after botox F injections, including 9 of the 12 patients who had improved with type A toxin. Six of 9 patients with pain had improvement in pain after botox F injections. Patients reported similar improvement with type F and type A toxins, but duration of benefit was Λ3 months with type A and Λ1 month with type F. Botox F is an effective treatment for torticollis in patients who are immune to botox A. The usefulness of type F toxin, however, is limited by short duration of benefit.
π SIMILAR VOLUMES
## Abstract Intramuscular injection of botulinum toxin type A is the treatment of choice for most cases of oromandibular dystonia. We report on five patients with oromandibular dystonia that developed secondary nonresponsiveness to botulinum toxin type A following multiple injections over a 6βyear
## Abstract Botulinum toxin (BTX) injection is considered the treatment of choice for patients with cervical dystonia (torticollis). We conducted a pilot, openβlabel, doseβescalation study with BTX type B in 12 patients who no longer responded clinically to injections with BTX type A. At the doses