These rashes can range from mild redness to more severe blistering and inflammation, and they may worsen with prolonged sun exposure. Porphyria: Porphyria is a rare group of disorders caused by a ...

Watertown, Massachusetts-based Disc has agreed with the FDA that it will use average monthly time in sunlight during the ... According to the American Porphyria Foundation (APF), EPP and XLP ...

The condition, acute intermittent porphyria, also causes paralysis and is fatal in some cases. The novel approach fine-tunes the genetic instructions locked in our DNA. Doctors say they are ...