About this trial
People find the injections used in onabotulinumtoxinA (Botox®) uncomfortable. This study will test whether putting a small piece of cotton soaked with 4% lidocaine (a numbing medicine) inside the front of each nostril for 5 minutes before the injections reduces injection pain compared with cotton soaked in saline (salt water).
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Aged ≥18 years
Any gender
Able to provide informed consent
Meets clinical criteria for onabotulinumtoxinA for chronic migraine (minimum of 2 days of disability per month due to facial or headache pain, or 8 headache days per month, or more than 15 headaches per month)
Disqualifiers
Aged < 18 years
Trigeminal neuralgia, cluster headache, or other primary headache disorders as dominant diagnosis
Not able to provide informed consent
Known allergy/hypersensitivity to lidocaine or amide anesthetics
Trial design
Crossover
Treatments tested in this trial
onabotulinumtoxinA prophylaxis with Lidocaine
Procedure/SurgeryThe onabotulinumtoxinA prophylaxis procedure is the modified PREEMPT protocol consisting of 56 injections; 200 Units. The solution from the vial (lidocaine) will be dripped onto 2 small pieces of cotton. One piece of cotton will be placed in the anterior portion of the nasal cavity on each side of the nose. The cotton will be removed after 5 minutes. The clinician will then perform the various series of injections while assessing pain of the injection site following each series of injections.
OnabotulinumtoxinA prophylaxis with Saline
Procedure/SurgeryThe onabotulinumtoxinA prophylaxis procedure is the modified PREEMPT protocol consisting of 56 injections; 200 Units. The solution from the vial (Saline) will be dripped onto 2 small pieces of cotton. One piece of cotton will be placed in the anterior portion of the nasal cavity on each side of the nose. The cotton will be removed after 5 minutes. The clinician will then perform the various series of injections while assessing pain of the injection site following each series of injections.
Treatment groups
Trial outcomes
Primary outcomes
Overall patient-reported injection pain
Overall patient-reported injection pain \[0 (no pain) -10 (worse pain possible) Likert/Numeric Rating Scale\] between 4% lidocaine versus 0.9% saline.
Secondary outcomes
Patient-reported injection pain at each region
Comparison of patient-reported injection pain \[0 (no pain) -10 (worse pain possible) Likert/Numeric Rating Scale\] between regions by treatment. Facial anatomical regions include: 1. Forehead/glabellar (frontalis + corrugator/procerus) 2. Right temple (temporalis) 3. Left temple (temporalis) 4. Posterior scalp/neck (occipitalis, cervical paraspinals, trapezius combined)
Sponsors and contacts
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Association of Migraine Disorders
Lead sponsor
University Otolaryngology
Collaborator