SBA Derm Conditions

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Dermatology SBA Questions

1. A 16-year-old presents with inflamed, pustular lesions on their face and back. What is the most likely diagnosis?

Acne Vulgaris on Oily Skin
  • Acne vulgaris
  • Psoriasis
  • Rosacea
  • Eczema

Explanation: Acne vulgaris is common in adolescents and typically presents with comedones, papules, and pustules on the face and upper body.

2. A 45-year-old man presents with silvery, scaly plaques on the extensor surfaces of his elbows and knees. What is the diagnosis?

Psoriasis manum
  • Psoriasis
  • Seborrhoeic dermatitis
  • Tinea corporis
  • Contact dermatitis

Explanation: Psoriasis is characterised by silvery, scaly plaques on extensor surfaces and may have nail changes.

3. A 6-year-old boy presents with honey-coloured crusted lesions around his mouth. What is the most likely diagnosis?

Impetigo
  • Impetigo
  • Herpes simplex
  • Erythema multiforme
  • Scabies

Explanation: Impetigo presents with honey-coloured crusted lesions and is usually caused by Staphylococcus aureus or Streptococcus pyogenes.

4. A 30-year-old woman presents with erythematous facial flushing and visible telangiectasia. What is the likely diagnosis?

Rosacea
  • Rosacea
  • Acne vulgaris
  • Lupus
  • Seborrhoeic dermatitis

Explanation: Rosacea is characterised by flushing, erythema, and telangiectasia, often triggered by sunlight or heat.

5. A 70-year-old man presents with a pearly, rolled-edge lesion on the nose. What is the likely diagnosis?

Basal Cell Carcinoma
  • Basal cell carcinoma
  • Squamous cell carcinoma
  • Actinic keratosis
  • Melanoma

Explanation: Basal cell carcinoma often presents as a pearly nodule with rolled edges and central ulceration.

6. A 25-year-old presents with itchy, red, vesicular lesions on their hands after exposure to nickel jewellery. What is the most likely diagnosis?

Contact Dermatitis
  • Contact dermatitis
  • Atopic eczema
  • Psoriasis
  • Tinea manuum

Explanation: Contact dermatitis is triggered by allergens like nickel and presents with vesicular, erythematous lesions.

7. A 50-year-old man with a history of chronic sun exposure presents with a rough, scaly lesion on his forehead. What is the likely diagnosis?

Actinic keratosis of the scalp
  • Actinic keratosis
  • Seborrhoeic keratosis
  • Basal cell carcinoma
  • Psoriasis

Explanation: Actinic keratosis is a premalignant lesion caused by chronic sun exposure.

8. A 5-year-old presents with intensely itchy lesions between the fingers and wrists. What is the most likely diagnosis?

Scabies
  • Scabies
  • Eczema
  • Tinea corporis
  • Urticaria

Explanation: Scabies causes pruritic lesions between the fingers and wrists due to mites burrowing.

9. A patient presents with a painful, red swelling around the nail. What is the likely diagnosis?

Paronychia
  • Paronychia
  • Cellulitis
  • Impetigo
  • Tinea unguium

Explanation: Paronychia presents as a painful, red swelling around the nail, often caused by bacterial infection.

10. A patient presents with an erythematous, swollen, and tender lower leg. What is the most likely diagnosis?

Cellulitis
  • Cellulitis
  • DVT
  • Erysipelas
  • Abscess

Explanation: Cellulitis is an infection of the dermis and subcutaneous tissue, presenting with erythema, swelling, and tenderness.

Total Score: 0/10