Crocodile-like skin is seen in which of the following?
Appeared in: INI-CET EXAM -2025
Explanation
High-voltage electrical current generates extreme heat as it passes through tissues, causing coagulation necrosis.
This process results in a hard, dry, leathery eschar (dead tissue) at the entry and exit points of the current.
The appearance of this eschar is often charred, depressed, and yellow-grey, which is clinically described as 'crocodile-like skin'.
This type of burn is a full-thickness injury, destroying nerve endings and making the area painless.
Why Other Options Were Wrong
Option A: Chronic arsenic poisoning causes distinct skin changes, but not 'crocodile skin'. The classic signs are hyperkeratosis (thickening of the skin, especially on palms and soles) and 'raindrop' hyperpigmentation.
Option C: Moist burns, or scalds, are caused by hot liquids or steam. They typically result in partial-thickness burns with erythema (redness), pain, and blistering. The skin is moist, not dry and leathery.
Option D: The appearance of chemical burns is highly variable depending on the specific chemical agent, its concentration, and duration of contact. While severe necrosis can occur, 'crocodile skin' is not a standard or specific descriptor for chemical burns.
Related Visual
Visual 1: Image - A close-up photograph of a high-voltage electrical burn, clearly showing the dry, leathery, and charred eschar characteristic of 'crocodile skin'.
Visual 2: Diagram - A flowchart illustrating the pathophysiology of electrical injury, from current entry to coagulation necrosis and deep tissue damage, highlighting the 'iceberg effect'.
Clinical Relevance
Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Identification of the cause of specific dermatological findings in trauma and toxicology as background academic context rather than a clinical decision trigger.
A nurse must recognize that the 'crocodile skin' of a high-voltage burn signifies a severe, deep injury, not just a surface wound. The external damage is often minimal compared to the internal destruction.
Immediate nursing priorities for a patient with high-voltage electrical injury include cardiac monitoring (ECG) for life-threatening arrhythmias, assessing for compartment syndrome, and managing potential rhabdomyolysis (muscle breakdown) which can lead to acute kidney injury.
What if? - If the patient had a low-voltage electrical injury (e.g., from a household appliance), the presentation would be different. It might cause a small, localized contact burn or, more seriously, induce ventricular fibrillation without the characteristic 'crocodile skin' deep tissue burn.
How to Approach the Question
First, identify the key descriptive phrase in the question: 'Crocodile-like skin'. This is a specific clinical sign.
Next, evaluate each option based on your knowledge of pathology and trauma.
Recall or deduce the effects of each condition on the skin. High-voltage electricity generates intense heat, causing deep tissue coagulation.
Contrast this with the effects of arsenic (a poison causing pigmentation/keratosis), moist heat (scalds causing blisters), and chemicals (variable effects).
The description of a dry, leathery, coagulated burn strongly matches the pathophysiology of high-voltage electrical injury, leading to the correct answer.
Concept Tested & Keywords
Concept Tested: Identification of the cause of specific dermatological findings in trauma and toxicology.
Stem keywords: Crocodile-like skin
Lead-in keywords: seen in
Question ID
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