755-nm Alexandrite Picosecond Laser with a Diffractive Lens Array or Zoom Handpiece for Post-Inflammatory Hyperpigmentation: Two Case Reports with a Three-Year Follow-Up

Figures & data

Table 1 Case 1. Data of Brown Patches and Ultraviolet Patches from VISIA

Time	Counts of Brown Patches	Score of Brown Patches	Counts of Ultraviolet Patches	Score of Ultraviolet Patches
Before treatment	183	58.276	330	18.523
After the second treatment	202	48.654	353	18.882
Before the third treatment	192	54.429	349	20.856
After the third treatment	169	50.794	362	17.662

Figure 1 Pictures of the first case. (A) Before treatment, (B) after the second treatment, (C) the color of the original lesions deepened before the third treatment, and (D) 3-year follow-up after the third treatment.

Figure 2 Pictures of the second case. (A) Before treatment, (B) after the second treatment, (C) dermatoscopy showed uneven brown lesions with unclear boundaries, and (D) the original skin lesion became normal after three years treatment.