Child Abuse: Cutaneous Manifestations — MCQs
Most accurate method to determine age of bruise between 24-72 hours?
Match the following scale types with their lesions. | Scales | Lesions | | :-- | :-- | | 1. Collarette scales | a. Pityriasis versicolour | | 2. Silvery scales | b. Pityriasis rosea | | 3. Mica-like scales | c. Psoriasis | | 4. Branny scales | d. Pityriasis lichenoides |
Which of the following findings is LEAST likely to be associated with battered child syndrome?
What percentage of total body surface area is affected in an adult with burns involving both lower limbs and genitalia?
Which of the following is a characteristic feature of Battered Baby Syndrome (Non-Accidental Injury)?
A body is discovered with burn marks as shown in the image, resembling a 'crocodile skin' pattern. What is the most likely cause?
A 16-year-old girl comes to a doctor with fractured forearm. She said she tripped and fell but cigarette burns were observed on her forearm. What will be your next step?
Which of the following is the most common late toxic manifestation of diphtheria in a child?
A child presents with a history of hypopigmented macules on the back, infantile spasms, and delayed milestones. What is the most likely diagnosis?
A 14-year-old boy presents with seizures and skin macules. What is the probable diagnosis?
Child Abuse: Cutaneous Manifestations Indian Medical PG Practice Questions and MCQs
Question 1: Most accurate method to determine age of bruise between 24-72 hours?
- A. Histology
- B. Photography
- C. Visual examination
- D. Spectrophotometry (Correct Answer)
Explanation: ***Spectrophotometry*** - **Spectrophotometry** attempts to objectively measure the concentrations of **hemoglobin degradation products** (oxyhemoglobin, deoxyhemoglobin, methemoglobin, bilirubin) in bruised tissue - Theoretically provides **quantitative assessment** of pigment changes that occur over time - Considered by some textbooks as the **most objective method** for bruise age estimation in the 24-72 hour window - **Note:** Recent research suggests significant limitations exist in accurately dating bruises regardless of method used *Histology* - Shows cellular changes, inflammatory response, and presence of hemosiderin-laden macrophages - More invasive and provides information about **healing stages** rather than precise time estimation - Has significant **inter-individual variability** making narrow timeframe dating (24-72 hours) difficult - Still considered more objective than visual methods but less precise than spectrophotometric analysis *Photography* - Documents bruise appearance but relies on **subjective color interpretation** - Affected by multiple variables: lighting conditions, skin tone, camera settings, and depth of bruise - Lacks **quantitative analytical capability** for objective measurement - Useful for documentation but not for accurate age determination *Visual examination* - **Highly subjective** and least reliable method for bruise age determination - Wide variation in bruise appearance based on skin tone, location, depth, individual healing factors, and trauma severity - Traditional color-change timeline (red→blue→green→yellow) has been shown to be **unreliable** in forensic practice - Cannot provide accurate age estimation within narrow timeframes
Question 2: Match the following scale types with their lesions. | Scales | Lesions | | :-- | :-- | | 1. Collarette scales | a. Pityriasis versicolour | | 2. Silvery scales | b. Pityriasis rosea | | 3. Mica-like scales | c. Psoriasis | | 4. Branny scales | d. Pityriasis lichenoides |
- A. 1-d, 2-c, 3-a, 4-b
- B. 1-c, 2-b, 3-d, 4-a
- C. 1-a, 2-b, 3-d, 4-c
- D. 1-b, 2-c, 3-d, 4-a (Correct Answer)
Explanation: ***1-b, 2-c, 3-d, 4-a*** - **Collarette scales** are pathognomonic of **Pityriasis rosea**, appearing as fine, trailing scales around the periphery of oval lesions in a "Christmas tree" distribution. - **Silvery scales** are the classic hallmark of **Psoriasis**, presenting as thick, adherent, silvery-white scales overlying well-demarcated erythematous plaques. - **Mica-like scales** are characteristic of **Pityriasis lichenoides**, appearing as thick, shiny, adherent scales that can be peeled off like mica sheets. - **Branny scales** are typical of **Pityriasis versicolor**, presenting as fine, powdery scales caused by **Malassezia** yeast overgrowth. *1-d, 2-c, 3-a, 4-b* - Incorrectly matches **collarette scales with Pityriasis lichenoides**, which typically presents with mica-like scales, not collarette scales. - Misassociates **mica-like scales with Pityriasis versicolor**, which characteristically has branny (fine, powdery) scales. *1-c, 2-b, 3-d, 4-a* - Wrongly pairs **collarette scales with Psoriasis**, which is known for thick silvery scales, not peripheral collarette scales. - Incorrectly matches **silvery scales with Pityriasis rosea**, which has collarette scales at lesion periphery, not silvery scales. *1-a, 2-b, 3-d, 4-c* - Falsely associates **collarette scales with Pityriasis versicolor**, which has branny scales from yeast infection, not collarette scales. - Mismatches **branny scales with Psoriasis**, which has characteristic thick silvery scales, not fine powdery scales.
Question 3: Which of the following findings is LEAST likely to be associated with battered child syndrome?
- A. Subdural hematoma
- B. Skin bruising
- C. Failure to thrive (Correct Answer)
- D. Multiple fractures in different stages of healing
Explanation: ***Failure to thrive*** - While **neglect** can lead to failure to thrive, it is **less directly indicative** of battered child syndrome compared to specific traumatic injuries - Failure to thrive reflects **chronic malnutrition and inadequate care** rather than acute physical abuse - Battered child syndrome primarily involves **physical trauma** (fractures, bruises, head injuries) rather than growth deficiencies - Of all the options, this finding is **LEAST characteristic** of direct physical battering *Subdural hematoma* - **Highly associated** with battered child syndrome, particularly in **abusive head trauma** (shaken baby syndrome) - Results from tearing of bridging veins due to violent shaking or impact - One of the most serious manifestations of physical abuse in children *Skin bruising* - The **most common visible sign** of physical abuse in children - Multiple bruises in **different stages of healing** and in unusual locations (face, neck, trunk, buttocks) are highly suspicious - Pattern bruising (hand prints, belt marks, loop marks) is pathognomonic of abuse *Multiple fractures in different stages of healing* - **Classic radiologic finding** in battered child syndrome - Metaphyseal corner fractures and posterior rib fractures are particularly specific for abuse - Different stages of healing indicate repeated episodes of trauma
Question 4: What percentage of total body surface area is affected in an adult with burns involving both lower limbs and genitalia?
- A. 18%
- B. 19%
- C. 36%
- D. 37% (Correct Answer)
Explanation: ***37%*** - The **Rule of Nines** is used to estimate the percentage of **Total Body Surface Area (TBSA)** affected by burns in adults. - According to this rule, each lower limb accounts for **18%** of TBSA, and the genitalia/perineum accounts for **1%**. Therefore, both lower limbs (18% + 18%) + genitalia (1%) = **37%**. *18%* - This percentage represents only **one entire lower limb** or the entire anterior trunk in an adult according to the Rule of Nines. - It does not account for both lower limbs and the genitalia. *19%* - This would represent one lower limb (18%) plus the genitalia (1%), or an entire lower limb plus a small additional area. - It does not cover the **entirety of both lower limbs** and genitalia. *36%* - This percentage would typically refer to the **entire back** (18%) and the **entire chest/abdomen** (18%), or both lower limbs without the genitalia. - It specifically **excludes the 1% for the genitalia**, making it an underestimation for the scenario described.
Question 5: Which of the following is a characteristic feature of Battered Baby Syndrome (Non-Accidental Injury)?
- A. Stab injury
- B. Firearm injury
- C. Bruises of varying ages (Correct Answer)
- D. None of the options
Explanation: ***Bruises of varying ages*** - The presence of bruises at **different stages of healing** is a hallmark indicator of **non-accidental trauma** or Battered Baby Syndrome, as it suggests repeated injuries occurring over time rather than a single incident. - **Forensic significance**: Fresh bruises (red/purple) alongside older bruises (yellow/green/brown) indicate multiple episodes of trauma, which is inconsistent with the caregiver's explanation of a single accidental event. - Other classic features include fractures (especially metaphyseal/corner fractures, rib fractures), subdural hematomas, retinal hemorrhages, and injuries in protected body areas. *Stab injury* - While a stab injury represents severe trauma requiring forensic investigation, it is **not characteristic** of the typical presentation pattern of Battered Baby Syndrome. - Stab wounds indicate a specific violent act rather than the pattern of **repeated blunt force trauma** that defines the syndrome. - Battered Baby Syndrome classically involves injuries from shaking, hitting, or blunt trauma rather than penetrating injuries. *Firearm injury* - A firearm injury is a distinct acute traumatic event that does not represent the **chronic, repetitive abuse pattern** seen in Battered Baby Syndrome. - Such injuries are typically isolated incidents rather than part of ongoing physical abuse with varied injury ages. - The syndrome is characterized by multiple injuries at different healing stages from repeated episodes, not single penetrating trauma. *None of the options* - This option is incorrect because "bruises of varying ages" is a **well-established forensic indicator** for diagnosing Battered Baby Syndrome in medical literature and practice. - The presence of injuries at multiple stages of healing is one of the most important diagnostic features that raises suspicion for non-accidental injury in pediatric forensic medicine.
Question 6: A body is discovered with burn marks as shown in the image, resembling a 'crocodile skin' pattern. What is the most likely cause?
- A. Chemical burns
- B. High voltage electrical burns (Correct Answer)
- C. Scald burns
- D. Radiation burns
Explanation: ***High voltage electrical burns*** - **High voltage electrical burns** can cause severe damage, including charring and deep tissue necrosis, which can result in a contracted, leathery skin appearance often described as **"crocodile skin"** or **alligator hide**. - The alternating current (AC) associated with high voltage can lead to muscle tetany, causing the victim to clench onto the source, prolonging exposure and increasing the severity of damage and the characteristic burn pattern. *Chemical burns* - Chemical burns result from exposure to corrosive substances and typically manifest as **discoloration**, **blistering**, or **deep tissue damage** depending on the agent and duration of contact. - While severe, chemical burns usually do not produce the specific "crocodile skin" pattern of extensive charring and contraction seen with high voltage electricity. *Scald burns* - Scald burns are caused by hot liquids or steam and commonly result in **blistering**, **redness**, and superficial to partial-thickness skin damage without the deep tissue charring. - The pattern of injury would typically be distinct from the described "crocodile skin," often showing flowing or splash patterns. *Radiation burns* - Radiation burns occur due to exposure to high doses of radiation and can lead to **erythema**, **blistering**, and **skin breakdown** over time. - These burns develop progressively and often have a characteristic delayed presentation and pattern related to the radiation field, not the immediate charring seen with electrical injuries.
Question 7: A 16-year-old girl comes to a doctor with fractured forearm. She said she tripped and fell but cigarette burns were observed on her forearm. What will be your next step?
- A. To tell or discuss with colleagues that she is a case of abuse
- B. To inform higher authorities
- C. To do a complete physical examination (Correct Answer)
- D. To call local social worker for help
Explanation: ***To do a complete physical examination*** - A comprehensive **physical examination** is essential to assess the full extent of injuries and to identify any other signs of abuse that might not be immediately apparent. - This step ensures that all medical needs are addressed and that any potential harm is documented appropriately within the medical record. *To tell or discuss with colleagues that she is a case of abuse* - While suspicion of abuse is high, immediately labeling the patient as a "case of abuse" to colleagues without further assessment can be premature and may compromise patient confidentiality. - Discussing with colleagues should follow a thorough examination and be part of a structured approach to **interprofessional collaboration** once concerns are medically substantiated. *To inform higher authorities* - Reporting to higher authorities is a critical step in cases of suspected abuse, but it typically follows a **thorough medical evaluation** and documentation of findings. - Informing authorities prematurely without a complete medical assessment could lead to incomplete information and potentially delay necessary medical care for the patient. *To call local social worker for help* - Involving a social worker is an important component of managing suspected child abuse, as they can provide support and guidance for the patient and family. - However, the immediate priority is to address the patient's medical needs and gather medical evidence through a **complete physical examination** before initiating social services.
Question 8: Which of the following is the most common late toxic manifestation of diphtheria in a child?
- A. Polyneuritis (Correct Answer)
- B. Renal failure
- C. Myocarditis
- D. Septicemia
Explanation: ***Polyneuritis*** - **Polyneuritis** is the **most common late toxic manifestation** of diphtheria, typically appearing **2-6 weeks or more** after the onset of infection. - It results from the **diphtheria toxin's neurotoxic effects**, causing demyelination of peripheral nerves. - Clinical features include **cranial nerve palsies** (especially palatal and pharyngeal weakness), **limb weakness**, and **areflexia**. - It can persist for weeks to months and is the characteristic delayed complication. *Renal failure* - While diphtheria toxin can cause **acute tubular necrosis**, renal failure is **uncommon** and not a primary late toxic manifestation. - When kidney injury occurs, it is typically mild and occurs earlier in the acute phase rather than as a delayed complication. *Myocarditis* - **Myocarditis** is a serious complication of diphtheria occurring in **10-25% of cases**, typically appearing in **weeks 2-6**. - While it overlaps with the timing of late manifestations, it generally presents **earlier in that window** (often weeks 2-3) compared to polyneuritis. - It is a **major cause of mortality** in diphtheria, but **polyneuritis is more common as a late manifestation** presenting after week 3-4. - Clinical features include arrhythmias, heart failure, and conduction defects. *Septicemia* - **Septicemia** is not a direct toxic manifestation of *Corynebacterium diphtheriae*. - Diphtheria causes disease primarily through **localized infection and systemic toxin effects**, not through bloodstream invasion. - Secondary bacterial superinfection is possible but is not a characteristic manifestation of diphtheria toxicity.
Question 9: A child presents with a history of hypopigmented macules on the back, infantile spasms, and delayed milestones. What is the most likely diagnosis?
- A. Neurofibromatosis
- B. Sturge-Weber syndrome
- C. Tuberous sclerosis (Correct Answer)
- D. Nevus anemicus
Explanation: ### Explanation **Correct Answer: C. Tuberous Sclerosis (TSC)** The clinical triad of **hypopigmented macules (Ash-leaf spots)**, **infantile spasms** (West Syndrome), and **delayed milestones** is classic for Tuberous Sclerosis Complex. * **Pathophysiology:** TSC is an autosomal dominant neurocutaneous syndrome caused by mutations in the *TSC1* (Hamartin) or *TSC2* (Tuberin) genes, leading to the overactivation of the mTOR pathway and the formation of hamartomas in multiple organs. * **Dermatological markers:** Ash-leaf spots are often the earliest sign. Other features include Adenoma sebaceum (angiofibromas), Shagreen patches (connective tissue nevi), and periungual fibromas (Koenen tumors). * **Neurological markers:** Cortical tubers and subependymal nodules lead to seizures (infantile spasms) and intellectual disability. **Why Incorrect Options are Wrong:** * **A. Neurofibromatosis:** Characterized by *hyperpigmented* Café-au-lait macules, Lisch nodules, and neurofibromas, rather than hypopigmentation and infantile spasms. * **B. Sturge-Weber Syndrome:** Presents with a Port-wine stain (Nevus Flammeus) in the V1/V2 distribution of the trigeminal nerve, glaucoma, and leptomeningeal angiomas. * **C. Nevus Anemicus:** A localized vascular anomaly presenting as a pale patch due to catecholamine sensitivity. It does not cause systemic neurological symptoms or developmental delay. **High-Yield Clinical Pearls for NEET-PG:** * **Earliest sign:** Ash-leaf spots (best seen under **Wood’s lamp**). * **Most common heart lesion:** Rhabdomyoma (often regresses spontaneously). * **Most common kidney lesion:** Angiomyolipoma. * **Drug of choice for Infantile Spasms in TSC:** Vigabatrin. * **Pathognomonic sign:** Koenen tumors (Periungual fibromas).
Question 10: A 14-year-old boy presents with seizures and skin macules. What is the probable diagnosis?
- A. Sturge-Weber syndrome
- B. Turcot syndrome
- C. Tuberous sclerosis (Correct Answer)
- D. Von Hippel-Lindau disease
Explanation: ### Explanation **Correct Answer: C. Tuberous Sclerosis (TSC)** The combination of **seizures** and **skin macules** (specifically hypopigmented "Ash-leaf" spots) is a classic presentation of Tuberous Sclerosis Complex, a neurocutaneous syndrome inherited in an autosomal dominant fashion (TSC1/TSC2 gene mutations). * **Why it is correct:** In pediatric dermatology, the earliest sign of TSC is often the **Ash-leaf macule** (hypopigmented macules visible under Wood’s lamp). The involvement of the Central Nervous System leads to cortical tubers and subependymal nodules, which manifest clinically as **seizures** and intellectual disability (the "Vogt’s Triad": Seizures, Mental Retardation, and Adenoma Sebaceum). **Analysis of Incorrect Options:** * **A. Sturge-Weber Syndrome:** Characterized by a **Port-wine stain** (Nevus Flammeus) usually in the V1/V2 distribution of the trigeminal nerve. While it causes seizures, the skin lesion is a vascular malformation, not a macule. * **B. Turcot Syndrome:** A variant of Familial Adenomatous Polyposis (FAP) associated with CNS tumors (medulloblastoma/glioma) and colonic polyps. It does not typically present with characteristic skin macules. * **C. Von Hippel-Lindau (VHL) Disease:** Characterized by hemangioblastomas (retina/cerebellum) and renal cell carcinoma. It lacks the specific cutaneous macules associated with seizures in childhood. **High-Yield Clinical Pearls for NEET-PG:** 1. **Skin Findings in TSC:** Ash-leaf spots (earliest), Adenoma Sebaceum (angiofibromas), Shagreen patches (connective tissue nevi), and Periungual fibromas (Koenen tumors). 2. **Diagnostic Triad (Vogt’s):** Epilepsy, Low IQ, and Adenoma Sebaceum (only present in ~30% of cases). 3. **Other Associations:** Cardiac rhabdomyomas (often regress), Renal Angiomyolipomas (AML), and Lymphangioleiomyomatosis (LAM) in the lungs. 4. **Wood’s Lamp:** Essential for identifying Ash-leaf spots in fair-skinned children.
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