http://www.chemotherapyadvisor.com/pdt- … le/254856/

"Patients treated with PDT are immediately at increased risk for sunburn and should avoid overexposure to sunlight for up to 4 to 6 weeks after receiving treatment."

This information is what my dad was also told before he had his PDT. But in his case, his sensitivity and risk to sunburn etc lasted far longer than the 4-6 weeks after he had his treatment. Just thought I'd mention that to those who read the piece.

Gavin