Needle preference in patients receiving cosmetic botulinum toxin type A

Area of Science:

• Dermatology
• Aesthetic Medicine
• Pain Management

Background:

• Needle phobia and injection site discomfort are common patient concerns.
• Smaller gauge needles are hypothesized to reduce pain and bruising during injections.
• 30-gauge needles are the current standard for botulinum toxin type A (BTX-A) administration.

Purpose of the Study:

• To compare patient preference between 30-gauge and 32-gauge needles for BTX-A injections.
• To assess differences in pain and bruising experienced with the two needle sizes.
• To evaluate physician preference for needle gauge in BTX-A procedures.

Main Methods:

• A randomized, blinded study involving 37 subjects receiving BTX-A.
• BTX-A was administered bilaterally using 30-gauge and 32-gauge needles.
• Pain was rated on an 11-point scale; bruising and treatment effects were also recorded.

Main Results:

• No statistically significant differences in intra-procedural or post-procedural pain between 30-gauge and 32-gauge needles.
• Bruising rates were comparable, with 27% reporting more bruising with 32-gauge and 29.7% with 30-gauge.
• 83.8% of subjects did not perceive a difference in BTX-A efficacy; physician preference was also not significant.

Conclusions:

• 32-gauge needles do not offer a significant advantage over 30-gauge needles for BTX-A injections regarding pain or bruising.
• Current recommendations for 30-gauge needles for BTX-A administration can be maintained.
• Further research may explore patient-reported outcomes in specific populations or injection sites.