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Dermatol Surg. 2017 Jan;43(1):66-73. doi: 10.1097/DSS.0000000000000932.

A Topical Anesthetic and Lidocaine Mixture for Pain Relief During Keloid Treatment: A Double-Blind, Randomized Controlled Trial.

Author information

1
Division of Plastic and Reconstructive Surgery, Department of Surgery, Phramongkutklao Hospital, Phramongkutklao College of Medicine, Bangkok, Thailand.

Abstract

BACKGROUND:

Keloids are abnormal overgrowth of collagen fibers, and the first-line treatment includes intralesional injection of triamcinolone acetonide (TA), which is associated with pain.

OBJECTIVE:

To study the benefit of applying topical anesthetics or a 1:1 mixture of 1% lidocaine and TA at the TA injection site to alleviate pain during keloid treatment.

METHODS AND MATERIALS:

A double-blind, randomized controlled trial was conducted. Four TA injection methods were tested: control, lidocaine, topical, and combined. A visual analog scale (VAS) was used to assess needle-stick and injection pain. Data on pain duration after injection were also collected.

RESULTS:

Forty patients were enrolled (mean age, 37.1 years). The VAS scores of needle-stick pain in the control, lidocaine, topical, and combined groups were 4.18 ± 2.12, 3.82 ± 2.48, 2.03 ± 2.02, and 2.20 ± 1.99, respectively. Pain statistically decreased in the topical and combined groups. Intralesional injection pain (VAS) scores in the control, lidocaine, topical, and combined groups were similar as follows: 4.97 ± 2.50, 4.97 ± 2.79, 4.10 ± 2.80, and 4.43 ± 2.68, respectively.

CONCLUSION:

Application of topical anesthetics significantly relieved needle-stick pain, especially at sternum and auricular keloids; administration of a lidocaine mixture did not alleviate pain during injection.

PMID:
28027198
DOI:
10.1097/DSS.0000000000000932
[Indexed for MEDLINE]

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