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Differential diagnosis

Authoring team

Differential diagnosis includes:

  • inflammatory conditions e.g. seborrhoeic dermatitis, lichen simplex, nodular prurigo, discoid lupus erythematosus
  • premalignant conditions e.g. lentigo maligna, Bowen's disease
  • benign conditions e.g. seborrhoeic keratosis, epidermal naevus, keratoacanthoma, chondrodermatitis nodularis helicis
  • malignant conditions e.g. squamous cell carcinoma, superficial basal cell carcinoma, sebaceous carcinoma

Reference

  1. Patterson JW. Chapter 32: Tumors of the epidermis. In: Patterson JW. Weedon's skin pathology. 6th ed. Philadelphia, PA: Elsevier; 2025: 877-936.

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