What to expect from photodynamic therapy for basal cell carcinoma

Basal cell carcinoma is a skin cancer that can appear as a persistent shiny bump, scaly patch, or sore that does not heal. Photodynamic therapy is considered only for lesions whose depth, subtype, and location make this approach appropriate. The clinician prepares the surface, applies a light-sensitive medicine, allows it to act, and then uses a specific light to activate it in the treatment area.

During illumination, warmth, tingling, or stinging is possible. Afterwards, the site may be red, swollen, crusted, or sore. The visible reaction is part of the local healing process, but it does not by itself confirm that the tumour has cleared. Scheduled examination is essential, and a biopsy or another treatment may be discussed if the lesion persists or returns.

Tell your dermatologist about medicines, previous reactions to light, cold sores, allergies, and conditions that affect wound healing. Ask exactly how to shield the treated site from bright light after the session; light sensitivity can continue for the period specified by the clinic. Keep the area clean, avoid picking crusts, and use only the ointment or dressing recommended for you.

Avoid irritating skincare, shaving over the site, swimming, or strenuous activity if these instructions are given for your wound. Photographing the area for your own record can help you describe changes at follow-up, but it does not replace examination. Attend every review even when the surface looks calm.

Call the treating team if pain, warmth, swelling, or redness is increasing; if the wound produces pus or an unpleasant smell; or if you develop fever. Get urgent help for rapidly spreading swelling, breathing difficulty, eye involvement, or a severe light reaction. Report any renewed bleeding, a sore that fails to heal, a growing edge, or a new lump at the treated site because recurrent or residual basal cell carcinoma needs assessment.

Ask why photodynamic therapy fits the type and depth of your basal cell carcinoma, how the diagnosis was confirmed, how the site will be checked afterwards, and which signs should prompt an earlier review. Ask what other treatments would be considered if the lesion remains.