How it works
A dermatoscope combines lighting and magnification. Polarised light or contact with a suitable fluid reduces surface reflections, revealing structures within the lesion. The examination does not remove tissue.
What the dermatologist assesses
Pigment network, colour distribution, dots, globules, streaks and blood-vessel patterns contribute to the overall assessment. One feature alone is not a diagnosis. The clinician also considers location, history and comparison with other lesions.
Images and follow-up
Digital dermoscopy can store images for later comparison. Monitoring is not appropriate for every lesion: if the clinical concern warrants it, the doctor recommends further investigation or removal.
Limits and further assessment
Accuracy also depends on the examiner’s experience. Some lesions are difficult to interpret and findings can be falsely reassuring. Histology is required for confirmation when indicated. Dermoscopic algorithms are professional tools, not tests for home photographs.
Sources and update
Editorial update: 16 October 2026. This information provides guidance and does not replace a medical assessment.