Hypertrophic Scar–Keloid Distinction / 增生性瘢痕与瘢痕疙瘩区分

Definition

The hypertrophic scar–keloid distinction separates raised scar tissue that remains within the original injury and may mature from persistent growth extending beyond the original boundary, often with firmness, color change, itch, pain, or recurrent breakdown.

Current Synthesis

The source treats “scar constitution” as an imprecise public label. Visible or raised scarring after injury does not by itself establish a keloid tendency because ordinary wound healing can pass through a hypertrophic phase. Boundary behavior and time course are more discriminating: hypertrophic scarring remains confined to the injury, while a keloid can grow outward in a claw-like pattern and lacks the same tendency toward spontaneous softening.

Symptoms and history add context. Persistent hardness, red or dark color, itch, pain, growth, ulceration, or drainage support clinical assessment, while familial tendency may be relevant without making heredity a self-diagnostic test. Prevention advice, active lesion treatment, and revision of an old scar are different consultation goals.

Key Claims

• “Scar constitution” should not be inferred from any noticeable scar.
• Hypertrophic scars remain within the original wound boundary, whereas keloids extend beyond it.
• Time course and spontaneous maturation help distinguish the processes.
• Firmness, color, itch, pain, progressive growth, or breakdown can add clinically relevant evidence.
• Prevention, treatment of active overgrowth, and revision of a mature scar require different plans.

Evidence

• Clinic categories: VOL.41整形外科｜关于男性乳房发育、巨乳症、抽脂、美容针、瘢痕体质的认识误区 separates prevention consultations, active hypertrophic or keloid treatment, and revision of old scars.
• Boundary and behavior: VOL.41整形外科｜关于男性乳房发育、巨乳症、抽脂、美容针、瘢痕体质的认识误区 contrasts injury-confined scar growth with persistent keloid extension beyond the original wound.
• Symptoms and tendency: VOL.41整形外科｜关于男性乳房发育、巨乳症、抽脂、美容针、瘢痕体质的认识误区 describes familial tendency, texture, color, itch, pain, growth, and possible breakdown.

Counterevidence & Qualifications

This is a source-scoped recognition framework, not a substitute for examination or pathology when diagnosis is uncertain. Scar behavior varies by site, injury, skin characteristics, tension, inflammation, treatment, and time. The source does not establish prevalence, inheritance, prevention efficacy, or a treatment algorithm.

What Changed

• Created a boundary- and time-course-based distinction between hypertrophic scars and keloids.
• Replaced a broad “scar constitution” label with observable features and consultation goals.

Related Concepts

• Cosmetic Wound-Closure Planning / 美容缝合规划 - connects scar minimization to incision, tension, tissue handling, and closure.
• Plastic Surgery Clinical Scope / 整形外科临床范围 - places scar prevention and revision within medical and appearance care.
• Medical Diagnostic Reasoning - favors discriminating features over self-applied labels.