Something new to look out for if you see unexplained neutropenia and skin necrosis in patients using cocaine or heroin .
"A case series study showed that 23 individuals who presented at healthcare facilities with unexplained neutropenia or skin necrosis reported using cocaine or heroin in the past month. In addition, nearly one half of these patients were admitted to the hospital from emergency departments (EDs), 3 individuals were admitted to the intensive care unit, and 1 died.
Of the 23 cases, 12 were from Michigan, 10 from New Mexico, and 1 from Minnesota."
- Speedballing: Why Crack Cocaine and Heroin are Mixed (blogs.scientificamerican.com)