Sun exposure left a woman in "insufferable pain"
Updated on: October 3, 2026 / 10:10 AM EDT / CBS News
TL;DR
- Emily Pearson suffered from erythropoietic protoporphyria (EPP), a rare disorder causing extreme pain from sun exposure.
- For years, her life was limited by the need to constantly protect herself from sunlight.
- She participated in a clinical trial for bitopertin, a drug that lowers protoporphyrin IX levels in the skin.
- The medication has dramatically increased her sun tolerance, enabling her to run a marathon and enjoy outdoor activities without severe pain.
- Bitopertin is currently in Phase 3 clinical trials, with Disc Medicine awaiting further data for FDA review.