Pulsed Dye Laser for Keloids: What to Know

A keloid is raised scar tissue that extends beyond the original injury. Its colour, thickness, itch, tenderness, and firmness can change over time. Pulsed dye laser is designed to affect blood vessels in the scar, which may make a red keloid look less prominent and may help symptoms. It does not remove the tendency to form excess scar tissue. A dermatologist can explain the device in [Pulsed Dye Laser](/technology/pulsed-dye-laser/) and how it differs from treatment aimed at scar thickness.

Have the scar examined before treatment, especially if it is growing, painful, or crossing into nearby skin. Share any history of keloids, previous injections, surgery, or poor wound healing. The clinician may combine laser with another approach and will set expectations for follow-up visits. Protect the area from strong sunlight and follow wound-care instructions after each [Pulsed Dye Laser Treatment](/treatments/laser-and-energy/pulsed-dye-laser-treatment/). Avoid picking crusts or rubbing the treated scar.

Call the clinic if the treated area develops increasing warmth, drainage, marked swelling, blistering, or pain that is not easing. Arrange a review if the keloid grows quickly, becomes ulcerated, or develops a new unexplained colour change.

Ask whether the scar is a keloid or another type of scar, which feature the laser is intended to change, whether combination treatment is needed, and how recurrence will be monitored.