Pulsed Dye Laser Therapy - Benefits and Side Effects

Introduction

Pulsed dye laser treatment is a skin or dermatological treatment that uses a special type of laser to target various skin diseases. During this treatment, the laser emits light absorbed by the blood vessels in the skin, which causes the blood vessels to shrink and disappear. The light is converted into heat, which destroys blood vessels and leaves the surrounding skin undamaged. The treatment is safe and effective. It manages several dermatological conditions, such as scars, spider veins, hemangiomas, and rosacea. It also improves the stretch marks and warts appearance. However, some patients experience mild side effects, such as swelling and redness, which may resolve within a few days. It improves the appearance and health of the skin. The article discusses pulsed dye laser therapy, its procedure, benefits, side effects, and precautions.

What Is Pulsed Dye Laser Therapy?

Pulsed dye laser therapy, or PDL, is a type of laser that uses a lasing medium in which an organic dye is mixed in a solvent. The laser dyes included are fluorescein, rhodamine, malachite green, and tetracene. The solvents include water, ethanol, glycol, hexane, cyclohexane, and methanol. A high-energy light source, such as ruby laser, carbon dioxide, and ND: YAG laser, is used for liquid pumping. The laser dye solution is circulated quickly to avoid triplet absorption and decrease dye degradation. It is called pulsed dye because it is used as a solution with an organic dye to create the laser effect. The laser light excites the dye molecules to emit radiation. This therapy produces pulses at 585 or 595 nanometers (nm) wavelengths with a pulse duration of 0.45 to 40 milliseconds (ms).

What Is a Laser?

LASERs (light amplification by stimulated emission of radiation) are the sources of single-wave coherent light that can be used to manage various skin conditions. Various lasers, such as carbon dioxide and ND: YAG laser, manage skin conditions. These lasers are differentiated by a medium that produces a laser beam. Each laser has a specific range of utility based on the wavelength and laser penetration.

What Are the Types of Pulse Dye Lasers?

The types of pulse dye laser treatment are as follows:

• Pulse Dye Laser: Pulse dye laser treatment uses a bright light with short pulses that can be absorbed by abnormal blood vessels. This light is turned into heat, which damages the blood vessels.

• Long-Pulsed Laser: This type of laser provides a longer light pulse.

• Intense Pulse Light (IPL): This is also called a photo facial or IPL system that uses heat and light. It is not a type of laser.

How Is Pulsed Dye Laser Therapy Performed?

The procedure of pulsed dye laser therapy is described below:

• Patient Preparation: The procedure can be performed when the person is awake or when the person is asleep and under general anesthesia. Generally, there is no need for anesthesia, or it is the choice of the patient and their family members. General anesthesia is recommended only for children. The machine used in the procedure produces a cold spray before the laser pulse and reduces pain sensation. The main aim is to provide comfort to the patient. The procedure is quick and can be performed during an outpatient visit, and the patient can go home on the same day. The treatment usually takes only a few minutes. During the patient visit, the healthcare provider will obtain a consent form from the patient and perform laboratory testing, such as blood tests. The patient will change their clothes and wear a hospital gown.

• During the Procedure: The healthcare provider will hold a wand against the skin, which feels like a rubber band snapping, and pulse the laser. The patient may experience a burning or tingling sensation, which may resolve within six hours after treatment. The patient will be suggested to wear eye protection because the laser light may harm the eyes. In addition, the healthcare provider will test the patient's skin for any allergic reaction to the laser. The session may take around 30 minutes to treat a larger area. The procedure may take place over multiple sessions and may require 20 sessions.

• After Care: Following treatment, the care for the first few days includes using abrasive skin cleansers and avoiding scrubbing the treated area. The healthcare provider may apply a bandage or patch over the treated area to prevent abrasion. The patient is advised to protect the treated area from sun exposure to reduce the risk of postinflammatory pigmentation (pigmentation after an injury). Furthermore, the patient should wear loose clothes to avoid rubbing. Swimming and hot baths should be avoided until the treated area is healed.

What Are the Precautions Before and After Pulse Dye Laser Treatment?

The steps that the person should be aware of before and after pulse dye laser treatment are as follows:

• Avoid direct exposure to sunlight for at least three weeks before PDL therapy because suntanning absorbs lasers and makes the therapy less effective.

• The patient should avoid Aspirin-related products for 14 days before the procedure.

• The patient should wear sunscreen with SPF 30 or greater.

Who Can Benefit From Pulse Dye Lasers?

The pulse dye laser is used to treat several medical conditions that have been described below:

• Cutaneous Vascular Lesions: It is used to treat various vascular conditions, such as superficial hemangiomas (vascular skin tumors), telangiectasis (spider-like appearance of blood vessels), and cherry angiomas (small papular vascular skin lesions). Laser pulses are applied in a non-overlapping manner to avoid blistering and scarring.

• Non-Vascular Skin Conditions: Non-vascular skin conditions that can be treated with pulse dye laser include angiofibroma (a non-cancerous vascular tumor), warts (a skin condition), and pyogenic granulomas (a benign proliferation of capillary blood vessels).

• Melasma: It is a pigmentary disorder in which there are brownish hyperpigmented patches on the face. The therapy is performed for three sessions at three-week intervals.

• Burn and Hypertrophic Scars: Burn and hypertrophic scars (hard tissue resulting in scarring) can be managed with PDL therapy. It reduces the redness, scar thickness, and itchiness.

• Psoriatic Plaques: The therapy reduces the thickness of psoriatic plaques and is used as an adjuvant therapy.

• Cosmetic Enhancement: The therapy improves the skin's general appearance and enhances skin tone and texture by reducing redness and pigmentation irregularities.

What Are the Side Effects of Pulse Dye Laser Therapy?

The side effects of pulse dye laser therapy are as follows:

• The patient may experience pain during the treatment.

• There may be redness, swelling, or itching after the procedure.

• The person may experience allergic reactions.

• There can be changes in the skin pigmentation, leaving the skin darker or paler.

• Bruising can be more pronounced.

Conclusion

Pulsed dye laser therapy is a noninvasive and safe procedure for addressing skin and cosmetic concerns. It can manage vascular lesions, pigmented spots, scars, warts, and other skin lesions. It protects the surrounding skin. It causes little discomfort and has shorter recovery times. Before the procedure, the person should know its uses and side effects.