1 The normal reaction in the recovery period is due to the existence of postoperative wounds. In the process of wound healing, inflammatory reaction occurs first, and then myofibroblasts appear in the wound and divide and proliferate to synthesize collagen fibers. While healing the wound, collagen will also be deposited to form scars and scar hyperplasia.

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2. Scar hyperplasia in recovery period may be related to non-compliance with doctor's advice in recovery period after operation.

In the recovery period after surgery, doctors often tell patients to protect the wound, avoid damp and dust, avoid spicy food, and regularly use drugs to inhibit scar hyperplasia after wound healing. If the patient does not follow the doctor's advice, or has omissions, it will lead to scar hyperplasia.

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3 Foreign bodies falling into the wound surface Foreign bodies falling into the wound surface are one of the main causes of hypertrophic scars, such as dust, talcum powder, fibers, hair follicles, sebaceous glands and sweat glands. , can cause tissue reaction, leading to scar hyperplasia.

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4 Repeated infection Surgical scar Repeated infection is one of the important causes of hypertrophic scar. For example, long-term exposure of wounds, repeated infections of wounds, repeated scratches of scars, and excessive proliferation of granulation tissue. , are prone to hypertrophic scar or keloid, and this reason can be controlled, if patients pay attention to and take appropriate protection can be avoided.

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