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The scalp is one of the most highly vascular areas of the body. When bumped, it swells like crazy. When cut, it bleeds like crazy. That vasculature is also why you lose about 20% of your body heat through your scalp.
The RNNP probably used an ophthalmoscope to do a fundoscopic exam checking for papilledema which would be indicative of increased intracranial pressure. The RNNP may also have also used a sphygmomanometer to check his blood pressure more than once; because, widening pulse pressure (systolic number goes up while the diastolic goes down) is also indicative of increasing intracranial pressure. Had the signs and symptoms indicated it, he would probably already be on medications to reduce inflammation, pressure, and admitted for observation. You can monitor him at home for the symptoms of dizziness, vomiting, etc.
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If you're a do it yourselfer, you can keep a drill handy in case the intracranial pressure spikes and you want to drill some bore holes to relieve it. Just be sure to disinfect the drill bits so no one gets an infection. Kids love to watch adults use power tools.
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