What should you know about blue naevus dermoscopy?

A blue naevus is a usually blue-grey pigmented lesion created by pigment deeper in the skin. A dermatoscope provides magnification and controlled illumination, helping the clinician see colour distribution, symmetry, borders, and internal structures. The view can support a decision to monitor, photograph, compare over time, or remove the lesion for laboratory examination.

A stable, uniform pattern may be reassuring, but no single visual feature settles every case. A lesion that changes, has several colours, develops an irregular outline, or does not fit the expected pattern may need tissue diagnosis.

Tell the dermatologist when you first noticed the mark, whether it has changed, and whether there is a history of skin cancer or similar lesions. Bring earlier photographs and mention bleeding, crusting, pain, or itching. Avoid picking at the area before assessment. If removal is advised, ask how the wound will be closed, how the specimen will be examined, and when results will be available.

Arrange timely review for a blue naevus that enlarges, changes colour or shape, bleeds, crusts, becomes persistently painful, or is joined by a new nearby lump. Seek earlier advice if a mark changes after injury or if you cannot tell whether it is new.

Ask what pattern was seen through the dermatoscope, whether serial photographs are suitable, and what change should prompt reassessment. Ask whether mole removal is recommended and whether the full lesion can be sent for pathology.