Dossier
Crystal Lake woman
Coverage of Crystal Lake woman in the Nexus archive.
- One in 25,000 people has PKU. This suburban Chicago mom—and her daughter—are among them
A Crystal Lake woman teaches special education in Chicago Public Schools while managing phenylketonuria (PKU), a rare genetic condition that makes protein toxic to the brain. She and her daughter are among the one in 25,000 people globally who have PKU, diagnosed in her case at 14 days old.