photodynamic therapy (PDT) in sydney

What is Photodynamic Therapy?

Photodynamic therapy (PDT) is a non-surgical, light-based dermatology treatment used to target sun-damaged skin, precancerous lesions, and certain types of acne. PDT combines a special light-activated cream with a specific wavelength of light to treat abnormal or inflamed skin cells while minimising damage to healthy tissue. This advanced technique is especially effective for treating actinic keratoses (precancerous sun spots), field cancerisation (areas of extensive sun damage), and moderate-to-severe acne when other treatments have not been effective.

How does pdt work?

A light-sensitising cream—such as aminolevulinic acid (ALA) or methyl aminolevulinate (MAL)—is applied to the affected skin. After a waiting period (usually 1–3 hours), the area is exposed to a specific light source, either red or blue light, which activates the cream. This process selectively destroys abnormal or inflamed cells, helping to clear sun-damaged skin and reduce acne activity, while preserving healthy tissue.

What Can Photodynamic Therapy Treat?

  • Actinic keratoses (AKs): Precancerous sun spots on the face, scalp, chest, or hands

  • Field cancerisation: Large areas of sun-damaged skin with multiple lesions

  • Superficial skin cancers: In selected cases, PDT can treat superficial basal cell carcinoma’s and Bowens’ disease (superficial squamous cell carcinoma) as a non-surgical option

what to expect during and after pdt

During treatment, mild to moderate stinging or burning may occur while the light is applied, but this is usually well tolerated. After PDT, you may experience redness, swelling, and peeling for several days. It is essential to strictly avoid sun exposure and bright indoor light for 48 hours after treatment, as treated skin is highly sensitive to light.

Advantages of Photodynamic Therapy

  • Non-surgical, minimally invasive treatment

  • Excellent cosmetic results with minimal risk of scarring

  • Can treat large or multiple areas in a single session

  • Suitable for patients who cannot tolerate cryotherapy, surgery, or long-term topical creams

Aftercare for PDT

  • Use soothing moisturisers or emollients as recommended by Dr Liz

  • Strictly avoid sun exposure and bright indoor light for 48 hours after treatment

  • Follow Dr Liz’s personalised aftercare instructions for the best results

is photodynamic therapy right for you?

PDT is an excellent option for patients with widespread sun damage, persistent actinic keratoses, or those seeking non-surgical skin cancer and acne treatment. Dr Liz Dawes-Higgs, specialist dermatologist in Sydney, will assess your skin and discuss whether photodynamic therapy is suitable for your needs.

Book Here On-Line