WHAT IS PHOTODYNAMIC THERAPY?
Photodynamic Therapy
(PDT) is a special treatment performed with a topical
photosensitizing agent called Levulan (5-aminolevulinic acid
or ALA) activated with the correct wavelength of light. This
is also known as “ALA/PDT treatment”. These treatments
remove sun damaged pre-cancerous zones and spots called
actinic keratosis. Sun damage, fine lines, and blotchy
pigmentation are also improved because of the positive
effect of Levulan and the light treatment. ALA/PDT treatment
also has the unique ability to minimize pores and reduce oil
glands, effectively treating stubborn acne vulgaris, acne
rosacea, and improve the appearance of some acne scars.
HOW MUCH IMPROVEMENT CAN I EXPECT?
Patients with severe sun
damaged skin manifested by actinic keratosis, texture, and
tone changes including mottled pigmentation and skin laxity
may see excellent results. You may also see improvement of
large pores and pitted acne scars. Active acne can improve
dramatically.
HOW MANY TREATMENTS WILL IT TAKE TO
SEE THE “BEST RESULTS”?
To achieve maximum
improvement of pre-cancerous (actinic keratosis) sun damage,
skin tone and texture, a series of three treatments 2-4
weeks apart is the most effective. Some patients with only
actinic keratosis are happy with just one treatment. More
treatments can be done at periodic intervals in the future
to maintain the rejuvenated appearance of the skin.
WHAT ARE THE DISADVANTAGES?
Following PDT, the
treated areas can appear red with some peeling for 2-7 days.
Some patients (up to 10%) have an exuberant response to PDT, and
experience marked redness of their skin. Temporary swelling
of the lips and around your eyes can occur for a few days.
Darker pigmented patches called liver spots can become
temporarily darker and then peel off leaving normal skin.
(This usually occurs over seven to ten days.) Repeat
treatments may be necessary as PDT medicine is not an exact
science.
WHAT ARE THE ADVANTAGES?
1. Easier for patients
than repeated topical liquid nitrogen, Efudex (5FU), or
Aldara because the side effects are minimal, rapid healing,
and only 1-3 treatments required.
2. The ALA/PDT treatment
at our clinic is painless verses liquid nitrogen, 5-FU, and
Aldara.
3. Reduced scarring and
improved cosmetic outcome compared with cautery, surgery and
Efudex. Liquid nitrogen can leave white spots on your skin.
4. Levulan improves the
whole facial area treated creating all one color, texture,
and tone rather than just spot treating with liquid
nitrogen, cautery and surgery. In summary, PDT matches the
“Ideal treatment” for photodamaged skin:
-
well tolerated
(essentially painless)
-
easily performed by
a specialty clinic environment
-
non-invasive (no
needles or surgery required)
-
excellent cosmetic
outcome (particularly in cosmetic sensitive areas of the
face)