Photodynamic Therapy for Precancerous Lesions

Precancerous skin changes can develop quietly, especially in areas frequently exposed to the sun. These lesions may appear as rough patches, scaly spots, or persistent redness that does not improve with standard skincare. At Valley Dermatologic Medical Group, Inc. in Tarzana and Simi Dermatologic Medical Center, Inc. in Simi Valley, California, Dr. Daniel A. Gross, Dr. Charles E. Linden, and Dr. Ada M. Winkielman offer advanced treatment options that help patients address these early warning signs before they progress. Photodynamic therapy is one such option, providing targeted care for damaged skin while supporting long-term protection.

How Photodynamic Therapy Works

This is usually a two-step treatment of the precancerous lesion known as actinic keratoses. First, the medication is applied to the affected area, where it becomes light-sensitive, followed by activation with a specialized light source. During activation, abnormal cells are destroyed, with surrounding healthy tissue largely unaffected. For many patients, this method offers a balance of effectiveness and minimal downtime.

Conditions Often Treated with Photodynamic Therapy

Patients with sun-damaged skin are often ideal candidates for photodynamic therapy. Actinic keratoses, along with uneven texture or patches that flake or crust repeatedly, may signal the formation of abnormal cells. For this reason, early treatment is an essential part of preventative care, as these lesions can later develop into skin cancer. Dermatologists may recommend photodynamic therapy for patients in whom topical creams, cryotherapy, or other methods are not the most suitable solution based on skin type or case history.

What to Expect During Treatment

A typical session begins with cleansing the area to be treated, followed by application of the photosensitizing medication. There is a waiting period that allows full absorption of the medication before the light is applied. Patients may experience warmth, tingling, or mild stinging during the light activation, although these sensations usually pass quickly. Afterward, the skin may appear red or sensitive for a few days as it heals. Most people return to regular activities shortly after treatment, although sun protection remains important while recovering.

Long-Term Benefits and Prevention

Beyond treating active lesions, photodynamic therapy helps reduce the likelihood of future precancerous changes in the same area. By targeting damaged cells early, patients support healthier skin over time. At Valley Dermatologic Medical Group and Simi Dermatologic Medical Center, dermatologists create personalized care plans that include sun protection strategies, routine skin checks, and guidance for maintaining long-term skin health. These preventive steps are especially valuable for patients with a history of sun exposure or recurring actinic keratoses.

Schedule Photodynamic Therapy in Tarzana or Simi Valley

If you have persistent rough patches or areas of sun-damaged skin, photodynamic therapy may offer safe and effective relief. To schedule an evaluation, contact Valley Dermatologic Medical Group in Tarzana at (818) 345-7122 or Simi Dermatologic Medical Center in Simi Valley at (805) 527-6586. Our dermatologists provide attentive, personalized care to help patients protect their skin and address precancerous changes with confidence.