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Changes in Skin Color: Clinical Perspectives01:14

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The first thing a clinician sees is the skin, so the examination of the skin should be part of any thorough physical examination. Most skin disorders are relatively benign, but a few, including melanomas, can be fatal if untreated. A couple of the more noticeable disorders, albinism and vitiligo, affect the appearance of the skin and its accessory organs.
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Acne is a multifactorial skin condition primarily affecting adolescents and young adults, with a global prevalence estimated to exceed 75% in this demographic. The condition is characterized by the formation of comedones (blackheads and whiteheads), papules, pustules, nodules, and, in severe cases, cysts, particularly in areas rich in sebaceous glands such as the face, neck, chest, and back. The pathogenesis involves increased sebum production, follicular hyperkeratinization, colonization by...
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The skin is divided into epidermis, dermis, and hypodermis, the skin's outermost, middle, and inner layers. The human epidermal layer regularly undergoes renewal, where old, dead cells are replaced by new cells. Epidermal stem cells or EpiSCs divide and differentiate to restore the lost cells. For the renewal process, some EpiSCs continuously self-renew. In contrast, few others differentiate into transit-amplifying cells, which later form prickle or spinous cells, followed by granular...
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Laser Resurfacing for Latin Skins: The Experience with 665 Cases.

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Carbon dioxide (CO2) laser resurfacing can achieve good results in all skin types, including darker Fitzpatrick phototypes III-V. Proper treatment techniques and post-procedure care significantly reduce complication risks for Latin populations.

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Area of Science:

  • Dermatology
  • Aesthetic Medicine
  • Laser Technology

Background:

  • Carbon dioxide (CO2) laser resurfacing and microfractionated CO2 laser systems are effective for facial skin conditions.
  • However, these treatments carry a high risk of complications, particularly in Fitzpatrick skin phototypes III, IV, and V, common in Latin populations.
  • This has led to a decline in their use among surgeons.

Purpose of the Study:

  • To compare patient outcomes using CO2 resurfacing laser versus microfractionated CO2 laser resurfacing.
  • To demonstrate that similar results can be achieved in all skin types, including phototypes III, IV, and V, as seen globally.
  • To evaluate the efficacy and safety of different CO2 laser treatment modalities.

Main Methods:

  • A retrospective review of 665 patients treated with SlimE30 MiXto SX(®) CO2 laser from January 1998 to July 2012.
  • Analysis of outcomes, complications, and patient satisfaction across three treatment groups: CO2 ablative laser, CO2 microfractionated laser, and a combination of both.
  • Categorization of treatments based on skin phototype.

Main Results:

  • Ablative CO2 was used in 80.3%, microfractionated CO2 in 15.1%, and mixed treatments in 4.5% of cases.
  • Global hyperpigmentation rates were 30.4% for ablative CO2, 16.3% for combined, and 11% for microfractionated CO2, increasing with higher phototypes.
  • High patient satisfaction rates were reported: 86.7% for mixed, 82.2% for microfractionated, and 79.6% for ablative CO2 treatments.

Conclusions:

  • CO2 ablative and microfractionated CO2 laser systems, used alone or in combination, can yield good results with acceptable complication rates in Latin skin types.
  • Implementing staged treatments and ensuring adequate post-procedure care are crucial for minimizing complications.
  • These findings support the continued use of CO2 laser technologies for a wider range of skin types when managed appropriately.