Abstract | BACKGROUND: The Candela alexandrite and the Coherent diode laser systems come equipped with built-in skin cooling systems that are designed to both protect the epidermis, allowing higher fluences, and to alleviate discomfort. Nevertheless, pain can be a significant problem especially with treatment of larger areas. Scatter of the laser beam is reportedly affected by the spot size. It is claimed that larger spot sizes are more effective at identical fluences. OBJECTIVE: METHODS: The study was conducted in the axillae of 12 patients. Each axilla was divided in half for side-by-side comparison. Half of the right axilla was treated with the alexandrite 8 mm and the other half with the 12 mm spot size at identical fluences. The left axilla was treated at the maximum tolerated fluences with the alexandrite 12 mm spot size and the diode 9 mm spot size. RESULTS: CONCLUSION: Topical 5% lidocaine cream is a simple and effective method for reducing patient discomfort during laser hair removal procedures, even when a skin cooling device is being used. A larger spot size causes more pain than a smaller spot size at identical fluences. The 800 nm diode laser causes greater discomfort than the 755 nm alexandrite laser.
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Authors | S Eremia, N Newman |
Journal | Dermatologic surgery : official publication for American Society for Dermatologic Surgery [et al.]
(Dermatol Surg)
Vol. 26
Issue 7
Pg. 667-9
(Jul 2000)
ISSN: 1076-0512 [Print] United States |
PMID | 10886276
(Publication Type: Clinical Trial, Comparative Study, Controlled Clinical Trial, Journal Article)
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Chemical References |
- Anesthetics, Local
- Ointments
- Lidocaine
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Topics |
- Adolescent
- Adult
- Anesthetics, Local
(administration & dosage)
- Axilla
- Female
- Hair Removal
(methods)
- Humans
- Laser Therapy
- Lidocaine
(administration & dosage)
- Ointments
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