SBA Paediatrics Dermatology Medicine 10 Single Best Answer (SBA)
1. A 14-year-old boy presents with multiple inflamed pustules on his face and back. He has tried over-the-counter treatments without success. What is the most likely diagnosis?
Answer:
Explanation: Acne vulgaris is common in adolescents and is characterised by inflamed pustules and comedones. It often affects the face, back, and chest.
2. A 5-year-old girl presents with red, itchy patches on her cheeks and the creases of her arms. She has a family history of asthma. What is the most likely diagnosis?
Answer:
Explanation: Atopic dermatitis is common in children and presents with pruritic, eczematous lesions in areas such as the face, arms, and legs, particularly in patients with a family history of atopy.
3. A 6-year-old boy accidentally spills boiling water on his arm, resulting in redness, blistering, and pain. What is the appropriate management for this condition?
Answer:
Explanation: Immediate cooling of burns with cool running water is recommended to reduce tissue damage and prevent further complications.
4. A 7-year-old girl presents with a red, itchy rash on her hands and face after using a new soap. What is the most likely diagnosis?
Answer:
Explanation: Contact dermatitis is an inflammatory skin reaction that occurs after exposure to an irritant or allergen, resulting in an itchy, erythematous rash.
5. A 12-year-old boy presents with an itchy, red rash after taking antibiotics for a throat infection. What is the most likely diagnosis?
Answer:
Explanation: Drug eruptions occur as an adverse reaction to medications, resulting in a widespread erythematous rash. Antibiotics are a common cause in children.
6. A 4-year-old boy presents with red sores around his nose and mouth that quickly developed into honey-coloured crusts. What is the most likely diagnosis?
Answer:
Explanation: Impetigo is a highly contagious bacterial skin infection that presents with honey-coloured crusted sores, often around the nose and mouth.
7. A 3-year-old girl presents with intensely itchy red bumps between her fingers and on her wrists. Her mother reports similar symptoms. What is the most likely diagnosis?
Answer:
Explanation: Scabies is a parasitic skin infection that presents with intense itching, often at night, and characteristic burrows, particularly between the fingers and on the wrists.
8. A 10-year-old boy presents with a widespread, itchy rash that appeared suddenly. The rash consists of raised, red wheals. What is the most likely diagnosis?
Answer:
Explanation: Urticaria, or hives, is a common allergic reaction that presents with raised, red, itchy wheals that appear suddenly and can resolve spontaneously.
9. A 15-year-old girl presents with flat, warty growths on the soles of her feet that are causing pain when she walks. What is the most likely diagnosis?
Answer:
Explanation: Verrucae, or plantar warts, are caused by the human papillomavirus and often present as painful warty growths on the soles of the feet.
10. A 13-year-old boy presents with a widespread, target-like rash on his arms and legs. He recently had a cold sore outbreak. What is the most likely diagnosis?
Answer:
Explanation: Erythema multiforme is a hypersensitivity reaction that often follows infections like herpes simplex and presents with characteristic target-like lesions.
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