A: The Pediatric Environmental Health Specialty Units (PEHSU) are a source of medical information and advice on environmental conditions that influence children’s health.

PEHSUs are academically based, typically at university medical centers, and are located across the United States, Canada and Mexico. These PEHSUs form a network that is capable of responding to requests for information throughout North America and offering advice on prevention, diagnosis, management, and treatment of environmentally-related health effects in children.