What is the difference between scar hypertrophy and keloids?

Dec 31, 2024 Source: Cainiu Health

Dr. Liu Wenmin

Introduction

Hypertrophic scars and keloids differ in their causes, clinical manifestations, progression characteristics, recurrence rates, and prognosis. Hypertrophic scars are often caused by trauma and may gradually stabilize over time, with a low recurrence rate and a good prognosis. In contrast, keloids are usually triggered by minor injuries but tend to proliferate continuously and are difficult to resolve spontaneously. They are challenging to treat and have a high recurrence rate.

Generally, scar hypertrophy refers to hypertrophic scars, while lumps refer to keloids. The differences between hypertrophic scars and keloids lie in their causes, symptom presentation, development characteristics, recurrence rates, and prognosis. If discomfort occurs, timely medical consultation is recommended. Detailed analysis is as follows:

1. Causes

Hypertrophic scars are usually caused by excessive proliferation of fibrous tissue following skin trauma, possibly related to factors such as surgery or injuries. In contrast, keloids may develop from minor injuries, such as ear piercing, vaccination, or insect bites.

2. Symptom Presentation

Common symptoms of hypertrophic scars include raised skin surfaces with pale red or dark red coloration and firm texture. Keloids may present with raised skin lesions accompanied by itching and discomfort.

3. Development Characteristics

Hypertrophic scars may suddenly stop expanding during progression, return to a stable state, and gradually soften over time. Keloids generally continue to grow and typically do not regress spontaneously.

4. Recurrence Rate

Hypertrophic scars are relatively easier to treat, thus having a lower recurrence rate after treatment. In contrast, keloids are more challenging to treat and have a higher recurrence rate after treatment.

5. Prognosis

With timely and active treatment, hypertrophic scars can gradually return to a natural state and generally have a good prognosis. However, keloids can usually only be managed to control symptoms, as a complete cure is typically unachievable.

When scars appear, it is important to promptly distinguish their type and undergo targeted treatment. Additionally, scratching the affected area should be avoided during treatment to prevent irritation and delay recovery.

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