Dermatology in Physical Abuse
The skin is the largest organ and the one most directly affected in physical abuse, whether of children (child abuse), women and partners (intimate partner violence, IPV) or older adults (elder abuse). Accurately recognizing skin injuries of forensic significance can be life-saving: it protects victims and provides medical evidence.
Abusive skin injuries arise through three main physical mechanisms: blunt force trauma, thermal injury, and mechanical strangulation or friction.
How Bruise Color Changes Over Time (Ecchymosis Progression)
When blunt force ruptures the dermal capillary network, red blood cells leak into the surrounding tissue. Tissue enzymes then break down hemoglobin over a predictable biochemical timeline, which helps doctors estimate when the injury occurred.
- Days 0–2 (deep red, dark blue, purple): Freshly extravasated oxyhemoglobin and deoxyhemoglobin.
- Days 3–6 (green, blue-green): Hemoglobin is converted to biliverdin by the enzyme heme oxygenase.
- Days 7–12 (pale yellow, yellowish brown): Bilirubin and hemosiderin accumulate within macrophages.
- Day 14 onward: The bruise fades completely as macrophages clear the tissue.
Multiple bruises of different colors in the same area of the body suggest repeated abuse over time.
Clinical Classification of Skin Signs of Abuse
Bruises and Patterned Injuries
- Patterned bruising:
- Belt / electrical cord: Two parallel bruised lines with a strip of normal skin between them (central sparing), because the impact forces blood out toward the edges.
- Clothes hanger / rope: U-shaped or looped marks that match the size of the object.
- Hand or finger marks (grasp marks): Round or oval bruises 1–2 cm across arranged in a row, from forceful squeezing, grabbing or shaking.
- Human bite marks:
- An oval injury or two opposing crescents, with central bruising (from suction or pressure) and small lacerations or dot-like marks that match the dental arches.
- A distance of more than 3 cm between the canine marks usually indicates an adult bite.
Abusive Thermal Injuries
- Immersion (scald) burns:
- Occur when the victim (usually a child or older adult) is forcibly held under hot water.
- "Glove" or "stocking" pattern (glove-and-stocking distribution): A sharp, straight, horizontal line between burned and unburned skin, with no splash marks, the key feature that sets it apart from accidental burns.
- Sparing of skin folds (flexural sparing): Skin in the groin and behind the knees is spared because the victim reflexively curls up in self-defense.
- Contact burns:
- Cigarette: Round burns 8–10 mm across with a depressed center that heal into smooth, shiny, round atrophic scars.
- Clothes iron / electrical appliances: Deep, sharply outlined triangular or rectangular burns matching the hot metal surface.
Distribution of Injuries by Victim Group
- Children (child physical abuse): Injuries cluster in areas that are covered or rarely hurt accidentally (buttocks, backs of the thighs, back, abdomen, ears, neck, inner upper arms).
- Intimate partner violence (IPV): Injuries concentrate on the face, neck, chest, abdomen and forearms raised to block blows (defense wounds).
Forensic Assessment, Reporting and Skin Recovery at Haute-Derma
When physical abuse is suspected, our doctors strictly follow a forensic and victim protection protocol (Forensic Protection & Skin Restoration Protocol):
Sensitive Approach and Forensic Documentation
- Forensic photography: Full-body and close-up images of each injury. A standard forensic scale (ABFO No. 2 scale) must be placed next to the lesion so its size and proportions can be measured accurately.
- Body mapping (body map/chart): A detailed record of the location, size, shape, color and estimated age of every injury.
- Injury history: The statements of the victim and any accompanying person are recorded word for word. We look for inconsistencies between the described mechanism of injury and what the injuries actually look like.
Protecting the Victim and Mandatory Reporting
- The victim is examined separately from the person suspected of abuse.
- We contact the National Child Protection Hotline (111) or the local police or public health authorities right away, as required by law on reporting abuse.
Skin Repair and Restoration at Haute-Derma
- Acute phase (healing burns and ulcers): Wounds are cleaned with saline or 0.05% chlorhexidine. Hydrogel or silver (Ag+) bioactive dressings promote re-epithelialization and prevent secondary infection.
- Low-level light therapy, LLLT (630 nm / 830 nm): Reduces swelling, speeds the clearance of dermal hemorrhage and stimulates fibroblast proliferation.
- Cosmetic recovery of scars and hyperpigmentation:
- Pico laser (1064 nm / 532 nm): A photomechanical effect breaks up clumps of hemosiderin and melanin in post-traumatic dark spots (PIH) without damaging healthy tissue.
- Fractional CO2 laser (10,600 nm): Breaks down tight fibrous scar bands from burns or lacerations and remodels collagen to restore a smooth skin surface.
