A numbing medicine turned a woman’s blood blue | CNN

A 25-year-old woman walked into an emergency department in Providence, Rhode Island, complaining of generalized weakness, fatigue, shortness of breath… and an unusual symptom you don’t see every day.分類：business and industry sectors, business, economy and trade, drug safety, drug safety, efficacy and availability, health and medical, pharmaceutical industry, pharmaceuticals, pharmaceuticals and prescription drugs...