How long does photodynamic therapy take to work for basal cell carcinoma?

The medicine is activated by light and produces a reaction in treated tumor cells. Redness, swelling, soreness, oozing, or crusting can follow and may temporarily obscure the area. The surface can look unsettled while it heals, so appearance in the first days is not a reliable measure of treatment success.

Photodynamic therapy is used only for selected basal cell carcinomas. Depth, subtype, location, and the clinician’s examination affect whether it is appropriate. Follow-up is essential because a lesion that remains, returns, bleeds, or changes may need further treatment or tissue assessment.

Follow all instructions about avoiding light, wound care, and prescribed products. Clean gently, avoid picking the crust, and protect the area from sun after the team confirms the skin has recovered enough. Keep the planned review even if the surface looks clear; basal cell carcinoma requires clinical monitoring after treatment.

Contact the clinic for escalating pain, spreading redness, pus, fever, heavy bleeding, or swelling near the eye or airway. Request prompt review for a sore that does not heal, a new nodule, recurrent crusting, or a spot that bleeds with minor contact.

Ask why photodynamic therapy fits your lesion, when response will be checked, whether a biopsy or other treatment may be needed, and which changes should prompt an earlier appointment.