Use of the percutaneous collagen induction technique in the treatment of postinflammatory hyperpigmentation

Post-inflammatory hyperpigmentation is a common consequence of inflammatory dermatoses that tends to affect patients with higher phototypes more frequently and severely. It can be caused by any skin inflammation or lesion, including acne, eczema, contact dermatitis or burns. Topical therapies are generally effective, however in some cases the post-inflammatory hyperpigmentation is resistant to conventional treatments, such as chemical peels and laser therapy. The percutaneous collagen induction technique can be used in postinflammatory hyperpigmentation with good response. The authors describe a case of hyperchromia resulting from a burn caused by Alexandrite laser for hair removal that was resistant to conventional treatments. Based on the literature review and their clinical experience, the authors suggest that the percutaneous collagen induction technique — also known as microneedling — may be included in the therapeutic armamentarium for the treatment of postinflammatory skin hyperpigmentation, especially when there is resistance to conventional treatments.

Keywords: HYPERPIGMENTATION; THERAPEUTICS; NEEDLES