(HealthDay)—The intravenous drug Benlysta (belimumab) has been approved by the U.S. Food and Drug Administration to treat children with lupus, a chronic disease that triggers inflammation and damages tissues and organs throughout the body. Approved for adults since 2011, Benlysta is the first lupus treatment in the United States approved for children, the agency said in a news release. “While there is no cure for lupus, treatment can help our youngest...