##  [Photodynamic Therapy](/index.php/photodynamic-therapy) 

  ##  [Photodynamic Therapy](https://health.quantumdictionary.io/photodynamic-therapy-0) 

  

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**Health & Life Sciences Dictionary**

 







 

 

 

 



 

 

 

 

Definition

A therapeutic approach that administers a photosensitizing agent that preferentially accumulates in target tissue (systemically or topically) and then exposes that tissue to light of a specific wavelength to activate the agent; photoactivation generates reactive oxygen species (ROS) and other photochemical products that cause localized cytotoxicity and vascular effects, producing tissue damage whe