Photodynamic therapy (PDT) is a technique used to treat some types of skin cancer such as superficial basal cell carcinoma and areas of sun-damaged skin (pre-cancerous) that might become cancerous in the future. In PDT, a cream is first applied to the area to be treated, a special light or daylight then activates the cream. PDT is effective in most cases: it works by killing the abnormal cells in the affected skin area. However, sometimes the treatment may not be successful and alternative treatment will need to be discussed with the healthcare professional.
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