Overview
Photodynamic Therapy (PDT) is a new non-surgical technique that uses a cream or solution to activate a reaction with a specific light source (red or blue) or with laser to treat areas of sun damage and ageing skin, specific skin cancers, sun spots and acne.
There are three parts to the PDT treatment:
- apply the medicated solution
- allow the solution to react with your skin
- allow your skin to react with the light source
A process of ‘photo activation’ occurs when the primed skin area is treated with the laser or light source, this causes the damaged skin cells to be destroyed and the acne bacteria to be inactivated, while the healthy skin remains unharmed.
The Process
Photodynamic therapy PDT requires the application of either Aminolevulinate (ALA) solution or Metvix cream. This is decided by your doctor and is usually dependant on the type of skin damage or condition being treated. The solution is applied to the skin for approximately one to three hours prior to the area being exposed to the light source, this sensitises the damaged skin cells or acne areas. The skin is then covered with a fine film of plastic, which helps the skin absorb the solution. The application process usually causes little if any discomfort. Cool air may also be used to increase comfort throughout the procedure.
Recovery Process
Immediately after treatment you may feel as if you have sunburn. A cool compress will relieve this sensation. The degree of discomfort and redness can vary greatly between patients. Although no one wants dramatic peeling or redness, a greater reaction to treatment also usually indicates a more dramatic result.
Rarely some patients may experience a deeper treatment, which can take four to five weeks for normal skin colour and texture to return. In general, we try to tailor your individual treatment to limit the redness, peeling, and flaking to just a couple days. If necessary, paracetamol may be taken to reduce discomfort, however, if you feel that pain may prevent you sleeping, please contact the clinic.
Considerations
Patients must agree to refrain from sun exposure or solariums for two weeks after treatment. Failure to comply with any post-treatment skin care instructions may increase the chance of complications. If scabbing and/or blisters occur after treatment, swimming and contact sports should be avoided.
Risks and Complications
Rare side effects may include; blistering of the skin, skin infection, ulceration, scarring, Hypo-pigmentation (lightening of the skin) and Hyper-pigmentation (darkening of the skin). Do NOT rub, scratch or pick at the treated area, as this will cause permanent damage.
FAQs
How does PDT treat acne?
There are three mechanisms of action when using PDT with BLU light is used for the treatment of acne: » Inactivates the bacteria that trigger acne. » Exfoliates the skin to unclog pores. » Shuts down the sebaceous glands in the skin, which are the main cause of the formation of acne.
How will my skin react?
PDT treatment is an invasive procedure, which may cause possible redness, swelling and peeling in the short term, this is normal and should be expected. In most cases, recovery is usually quick with only minimal skin redness or dryness. Makeup can be worn immediately after treatment.
How can I soothe my skin after treatment?
Topical sunburn care products, such as aloe vera, are also helpful. Normal moisturiser can be used to help peeling skin.
