Today, the U.S. Food and Drug Administration approved a lotion to treat head lice for nonprescription, or over-the-counter (OTC), use through a process called a prescription (Rx)-to-OTC switch. The FDA...

Head lice affect about six to 12 million children, ages three to 12, each year in the United States. Although head lice are not known to carry disease, dermatologists from the American Academy of Dermatology...