<s>[INST] I recently had a major wound on my left buttocks from surgery to remove necrotizing bacteria. The wound has been closed for a few days now but yesterday I noticed a few white, flaky spots on the area where the last bit of the wound had closed. The area is very hard. Today there was a larger amount of the white flaky stuff but it doesnt flake off like dry skin or dandruff, it is still very hard and almost feels like a scab. Should I be concerned about it? [/INST] Hello dear, i will going to solve your problem. After removal of necrotizing infection from your skin the wound is closed secondarily. But have you said that it do have white spots, which are actually sloughed of wound. The slough is made of dead bacteria, white blood cells and other dead cells. And for healthy wound the sought should be removed. When wound heals, it heals by fibrosis. Fibrosis causes hardening of wound. So please don't afraid of hardening. Hope I solved your problem but in case you have more queries and can ask me again. Thanks </s>