After using sodium heparin, my scar became raised. Why is this happening, and what should I do?

Generally, Heparin Sodium is available in various formulations including creams, lozenges, and injectable solutions. The occurrence of raised scars after using Heparin Sodium may be caused by factors such as increased skin tension, local skin sensitivity, abnormal skin metabolism, changes in local blood circulation, or a predisposition to hypertrophic scarring. Under a physician's guidance, treatments may include general care, medication, microneedle therapy, dermabrasion, or laser scar removal. Detailed explanations are as follows:

1. Increased Skin Tension

Body movements or changes in posture can cause the skin around the wound to be stretched, increasing local tension. After using Heparin Sodium, the balance of local tissue repair might be affected, making scars more likely to become raised under tension. One should avoid strenuous activities, reduce pulling on the scar area, keep the scar clean, and avoid infection.

2. Local Skin Sensitivity

Some individuals have skin that is inherently sensitive to medications or external stimuli, with heightened reactivity of nerve endings and immune cells. As a foreign substance, Heparin Sodium may irritate sensitive skin, triggering a local inflammatory response that can lead to scar tissue congestion, swelling, and elevation, possibly accompanied by itching. Under a physician's guidance, medications such as Calamine Lotion, Mometasone Furoate Gel, or Clobetasol Propionate Gel may be used for treatment.

3. Abnormal Skin Metabolism

Individuals may have unique skin metabolic functions. The application of Heparin Sodium might interfere with normal metabolic processes, potentially causing excessive proliferation of fibroblasts and abnormal deposition of collagen, leading to raised scars, which may also be accompanied by flaking. Patients may follow medical advice to use medications such as Tretinoin Cream, Niacinamide Tablets, or Compound Vitamin B Tablets. Microneedle therapy may also be performed under a physician's guidance, using a microneedle roller or radiofrequency device to create microchannels on the scar surface, stimulating the skin's self-repair mechanisms and enhancing topical medication absorption, thereby improving scar texture and appearance, and flattening raised scars. The typical reference price for microneedle therapy ranges from 1000 to 3000 yuan per session. Improvement is generally noticeable 2-3 months post-procedure, although side effects such as bleeding or bruising may occur.

4. Changes in Local Blood Circulation

After using Heparin Sodium, local microcirculation might be affected, altering blood supply and stimulating excessive growth of fibrous tissue, causing scars to elevate. Applying warm compresses to the surrounding normal skin can help promote circulation; prolonged pressure on the scar area should be avoided. When resting, elevating the affected limb appropriately and maintaining moderate physical activity can enhance overall circulation. Dermabrasion may also be considered under a physician's guidance, using specialized instruments to sand the scar surface, removing the raised portions and stimulating skin regeneration to make the scar level with the surrounding skin. The typical reference price for dermabrasion ranges from 800 to 3000 yuan per session. Improvement is usually noticeable 3-4 months post-procedure, although side effects such as swelling or exudation may occur.

5. Hypertrophic Scar Constitution

Patients with a hypertrophic scar constitution have an excessive wound healing response to trauma. Even during normal healing processes, the application of Heparin Sodium can easily lead to raised scars, which may also be accompanied by symptoms such as itching or pain. Laser scar removal may be performed under a physician's guidance, utilizing photothermal effects to vaporize or damage scar tissue, stimulating collagen remodeling and regeneration to improve scar texture and appearance, and reduce the degree of elevation. The typical reference price for laser scar removal ranges from 800 to 3000 yuan per session. Improvement is generally noticeable 1-3 months post-procedure, although side effects such as pigmentation or infection may occur.

It is recommended to visit a formal hospital and perform the above procedures under the guidance of a qualified physician to ensure safety and effectiveness. After the procedure, it is important to keep the wound clean and dry, avoid contact with water and scratching, change dressings and apply healing medications as instructed, protect against sun exposure, and avoid consuming spicy or irritating foods.