## Distinguishing Burns from Scalds ### Key Morphological Differences **Key Point:** Scalds (liquid thermal injuries) and burns (dry heat injuries) have distinctly different wound patterns that aid forensic identification. | Feature | Scald | Burn | |---------|-------|------| | **Margins** | Irregular, ill-defined | Sharp, well-demarcated | | **Depth** | Variable (shallow to deep) | Uniform depth | | **Pattern** | Splash marks, drip patterns | Uniform contact pattern | | **Periphery** | Gradient effect (hot liquid cooling) | Distinct boundary | | **Charring** | Absent or minimal | Present (especially 3rd degree) | | **Common cause** | Hot water, tea, milk | Flame, contact with hot objects | ### Clinical Pearl **Clinical Pearl:** Scalds in children often show characteristic splash patterns and peripheral droplet marks because the liquid spreads and cools as it runs down the body. Burns show uniform depth because the heat source maintains constant contact temperature. ### High-Yield Forensic Point **High-Yield:** The presence of **irregular margins with variable depth and splash marks** is pathognomonic for scald injuries and is the single best discriminator in forensic examination. This pattern reflects the physics of liquid heat transfer — rapid cooling at the periphery creates a gradient effect. ### Why This Matters in Child Abuse **Warning:** Immersion scalds (e.g., dunking in hot water) show a different pattern — sharp demarcation at the waterline with uniform depth — which may mimic a burn. However, splash scalds (the scenario here) are unmistakable.
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