Infections activate acute phase blood reactants, thereby predisposing to thrombosis
Severe headache at the onset of neurologic symptoms favours SAH, while headache that develops after symptom onset that is accompanied by gradually increasing
Vomiting is common in patients with ICH, SAH, and posterior circulation large artery ischemia.
Seizures are most often seen in patients with lobar ICHs or brain embolism, they are rare in patients with acute thrombosis.
Reduced alertness favours the presence of hemorrhage. Accompanying neurologic signs are suggestive of ICH, while the absence of focal signs suggest SAH. Loss of consciousness is also common in patients with thrombotic and embolic strokes that are large or involve the posterior circulation large arteries.
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