Head wounds bleed heavily because the scalp has a rich blood supply, so the volume of blood often looks worse than the actual injury. Always think about the mechanism of injury — a minor graze is very different to a direct impact from a falling object or a fall from height. If there is any possibility of a skull fracture, do not apply direct pressure to the wound as this can increase intracranial pressure. Instead, use a flat wrap without the pressure cup to manage external bleeding without compressing the injury site. Any significant head impact should be assessed medically, even if the person feels fine immediately after.
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