Given history, an: intracranial bleed possible though unlikely; subdural (veins) or arteries (less likely), vs. physiologic/memory related. The throbbing sensation is c/w vascular (migraine) mechanism. MRI brain = current best technology to differentiate (best at showing soft tissue), though CT brain more commonly done because less expensive (though also somewhat less accurate). Seek help worthy of your trust.
Answered 2/27/2016
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