What causes hypo-pigmentation or loss of pigmentation at incision sites?
Sometimes trauma to an incision site due to excessive friction from the in-and-out movement of the cannula can produce a persistent loss of pigmentation at the sight of the incision. For example, liposuction causes the fatty tissue in that area to become fibrous as a result of scar tissue in the fat. This fibrous scarring of the fat can persist for years. If liposuction is done again in the same area, the fat will be very difficult to penetrate with a liposuction cannula. The extra force and effort, and the extra number of strokes required to do effective liposuction may produce friction injury at the incision site. Such a friction can injure or kill some of the pigment cells surrounding the incision site, which results in a loss of pigment and hypo-pigmentation.
