Related Experiment Video
Updated: May 24, 2025

Ultrasound-guided Botulinum Toxin-A Injections: A Method of Treating Sialorrhea
Published on: November 9, 2016
Adjunct botulinum toxin for cicatricial pemphigoid.
Frank Mei1, Liane O Dallalzadeh1, Preston Choi1
1Department of Ophthalmology, University of Texas Southwestern Medical Center, Dallas, Texas, USA.
Botulinum toxin-A injections offer temporary relief for cicatricial entropion in patients with pemphigoid. This treatment improved ocular irritation and eyelid margin position during active conjunctivitis.
Area of Science:
- Ophthalmology
- Dermatology
Background:
- Pemphigoid can cause cicatricial changes in the conjunctiva, leading to entropion and trichiasis.
- These changes can result in limbal stem cell deficiency and corneal damage.
Purpose of the Study:
- To evaluate botulinum toxin-A as a temporizing treatment for lower eyelid cicatricial entropion in patients with active cicatrizing conjunctivitis.
Main Methods:
- A case series of three patients treated with botulinum toxin-A for lower eyelid cicatricial entropion.
- Patients received serial injections during active conjunctivitis phases.
Main Results:
- All patients reported subjective improvement in ocular irritation.
- Eyelid margin position improved, with decreased orbicularis override and better lash trajectory.
- No pemphigoid exacerbation occurred; patients opted for repeat injections.
Conclusions:
- Botulinum toxin-A is an effective temporizing treatment for cicatricial entropion when surgery is contraindicated.
- It provides symptomatic relief and improves eyelid function during active inflammation.
More Related Videos
Related Concept Videos
Directly Acting Muscle Relaxants: Dantrolene and Botulinum Toxin
The binding of dantrolene to the RYR1...
Skeletal Muscle Relaxants: Therapeutic Uses
Direct-Acting Cholinergic Agonists: Therapeutic Uses
Depolarizing Blockers: Pharmocokinetics
Myasthenia Gravis: Overview and Treatment
These antibodies interfere with the function of the nicotinic receptors in three ways: by binding to the receptor and disrupting acetylcholine binding; by causing cross-linking of receptors which...
Nondepolarizing (Competitive) Neuromuscular Blockers: Pharmacological Actions
Although all competitive neuromuscular blockers are designed...

