50.1 MB (1.7 MB compressed)
5187 x 3378 pixels
43.9 x 28.7 cm ⏐ 17.3 x 11.3 in (300dpi)
JOSE ANTONIO PENAS / SCIENCE PHOTO LIBRARY JOSE ANTONIO PENAS / SCIENCE PHOTO LIBRARY
Headache, illustration. Inflamed and expanded blood vessels in the region around the brain (blue) can lead to the throbbing and sharp pains of a headache. There can be a range of reasons for the underlying cause of the headache, but most are treatable with painkilling drugs.
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