SAM OGDEN / SCIENCE PHOTO LIBRARY SAM OGDEN / SCIENCE PHOTO LIBRARY
Headache. Conceptual image of a man holding his head due to the pain of a headache. The site of the pain is shown in pink. Headaches are generally caused by the expansion of blood vessels creating pressure on the membranes surrounding the brain. Most headaches can be treated with rest and painkilling drugs.
Model release available. Property release not required.