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Sunnex Dermatology

Photodynamic therapy

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Photodynamic Therapy (PDT)

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Photodynamic Therapy (PDT) is a technique for treating skin cancers and sun damaged skin which might one day turn cancerous (pre-cancers). In PDT a special light activates a cream which has been applied to the lesion (affected area of skin). This treatment kills the abnormal cells in the skin.

PDT involves the use of a light-sensitive chemical (called a photosensitiser). This photosenstitiser is, by itself, harmless. When a light of a certain wavelength (usually red light) is shone onto skin to which the photosensitiser has been applied, the photosensitiser is activated. This causes changes in the oxygen molecules within the sun-damaged skin cells. These "excited" oxygen molecules kill the cells. Only the area of skin exposed to the light source will be affected and inflamed; after the inflammation clears it should be cured.

PDT can be used to treat various skin conditions including:
  • Thin basal cell carcinomas
  • Bowen's disease (in situ squamous cell carcinoma), a pre-cancer
  • Actinic (solar) keratoses - early sun damage, a pre cancer

For further information about photodynamic therapy, please use the following link:
http://www.bad.org.uk/for-the-public/patient-information-leaflets/photodynamic-therapy
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  • Home
  • About Us
  • Research & Membership
  • Services
    • Skin Cancer
    • PDT
    • Dermatological Surgery
    • Cryotherapy
    • Mole Mapping
    • Patch Testing
    • TLO1 Light Therapy
  • News
  • Contact Us