PHILADELPHIA – Over a matter of weeks, Tracey McCann watched in horror as the bruises she was accustomed to getting from injecting fentanyl began hardening into an armor of crusty, blackened tissue.

Many people living on the streets in Philadelphia's Kensington neighborhood — the largest open-air drug market on the East Coast — are in full-blown addiction, openly snorting, smoking or injecting ...

Many people in Philadelphia’s Kensington neighborhood — the largest open-air drug market on the East Coast — are in full-blown addiction, openly snorting, smoking, or injecting illicit drugs, hunched ...