CME article part 1: Visual perception, cognition and error in dermatologic diagnosis

Dermatologic diagnosis relies on vision primarily and auditory and verbal input secondarily. Accurate dermatologic diagnosis is predicated on 1) seeing and perceiving a skin finding, 2) categorizing and naming the finding correctly, and 3) comparing the visual data and data obtained from the totality of the clinical encounter (i.e., from other sensory modalities) with one's working mental database of dermatologic diagnoses. The baseline assumption – which is false - is that a dermatologist is expert at each of the aforementioned steps and transitions sequentially between them seamlessly in an error-free fashion.

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