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Stroke

Cerebral Hemorrhage

Cerebral Hemorrhage · I61.9

Cerebral hemorrhage is a type of hemorrhagic stroke in which blood leaks into the brain parenchyma, forming a hematoma. Hypertension is the most common cause, and it is a neurological emergency with higher mortality and greater treatment difficulty than ischemic stroke.

2026-03-28

At a Glance

Cerebral hemorrhage accounts for approximately 10-20% of all strokes but has a high 30-day mortality rate of approximately 40-50%. Hypertension (approximately 50-70% of all cases) is the most common cause, primarily affecting the basal ganglia and thalamus. It is characterized by sudden headache, nausea, decreased consciousness, and rapidly progressing focal neurological deficits. CT scanning is essential for immediate diagnosis, and blood pressure control, prevention of hematoma expansion, and neurocritical care are the cornerstones of management. Approximately 75% of survivors are left with permanent functional disability.

Definition and Overview

Cerebral hemorrhage, or intracerebral hemorrhage (ICH), is a type of hemorrhagic stroke in which blood leaks into the brain parenchyma, forming a hematoma that compresses surrounding brain tissue. It is a distinct diagnostic category from subarachnoid hemorrhage and subdural hematoma.

It accounts for approximately 10-20% of all strokes [1], and while the incidence is lower than ischemic stroke, the 30-day mortality rate is significantly higher at approximately 40-50% [1]. Approximately 75-80% of survivors are left with moderate or greater permanent functional disability [1].

Etiology

Hypertension accounts for approximately 50-70% of cerebral hemorrhage cases [2]. Chronic hypertension damages small penetrating arteries deep within the brain, leading to lipohyalinosis and Charcot-Bouchard microaneurysm formation, which subsequently rupture. The most common sites are the basal ganglia (putamen is most frequent), thalamus, cerebellum, and pons.

Cerebral amyloid angiopathy (CAA) is a major cause of lobar hemorrhage in the elderly. Amyloid protein accumulates in the cerebral cortex and subcortical white matter, rendering the vessels fragile. Other causes include anticoagulant use (warfarin, direct oral anticoagulants), vascular malformations (arteriovenous malformation, AVM), ruptured cerebral aneurysm, tumor hemorrhage, and hematologic disorders (thrombocytopenia, coagulopathy).

Pathophysiology

Once a hematoma forms, primary damage occurs from mechanical compression. Subsequently, secondary damage progresses over hours to days as serum components leak into the perihematomal area, inflammatory responses develop, and hemoglobin within the hematoma degrades to release toxic substances [5].

Hematoma expansion is central to secondary injury. Hematoma enlargement occurs in approximately 30-40% of cases within 24 hours of onset, particularly within the first 3-6 hours, and is strongly associated with prognosis [2]. Early aggressive blood pressure control plays an important role in suppressing hematoma expansion [3].

Clinical Symptoms

Sudden onset of headache, nausea, vomiting, and decreased consciousness are the typical symptoms. Focal neurological deficits including hemiparesis, sensory abnormalities, speech disorders, and oculomotor abnormalities accompany the presentation depending on the hemorrhage location.

Basal ganglia (putaminal) hemorrhage: hemiparesis, hemisensory loss, and headache are common. Thalamic hemorrhage: hemisensory loss is prominent and oculomotor abnormalities (downward and medial gaze deviation) occur. Cerebellar hemorrhage: sudden vomiting, vertigo, and gait ataxia present, with occipital headache potentially being the main symptom without altered consciousness. Brainstem hemorrhage: rapid progression of consciousness decline with quadriplegia and respiratory abnormalities, carrying the worst prognosis.

Diagnosis

Non-contrast CT is the standard for emergency diagnosis. Cerebral hemorrhage is immediately identified as a hyperdense lesion on CT. CT angiography (CTA) is used to evaluate for vascular malformations, cerebral aneurysms, and contrast extravasation (spot sign, predictive of hematoma expansion). MRI (gradient echo, SWI sequences) is useful for etiologic analysis and CAA evaluation.

Treatment

Acute Blood Pressure Management

Early intensive blood pressure lowering (systolic blood pressure target of 140 mmHg) is recommended for hematoma expansion suppression and safety [3][4]. The ATACH-2 and INTERACT2 trials showed that controlling systolic blood pressure to 140 mmHg or below is safe and tends to improve the likelihood of neurological recovery [3][4].

Anticoagulation Reversal

Immediate anticoagulation reversal is essential when cerebral hemorrhage occurs in patients on anticoagulants [2]. Warfarin is reversed with 4-factor prothrombin complex concentrate (4-factor PCC). DOACs (direct oral anticoagulants) are reversed with drug-specific reversal agents (dabigatran: idarucizumab; factor Xa inhibitors: andexanet alfa).

Surgery

Surgery is considered for cerebellar hemorrhage with diameter of 3 cm or greater, intraventricular hematoma, and progressive deterioration of consciousness [2]. Craniotomy or minimally invasive endoscopic hematoma evacuation is performed for lobar hemorrhage and superficial hematomas. External ventricular drainage (EVD) is performed when intracranial pressure is elevated.

Frequently Asked Questions

Cerebral hemorrhage is characterized by sudden onset of symptoms. You should visit the emergency room immediately if you experience sudden severe headache ("worst headache of your life"), sudden weakness in one arm or leg, slurred speech, clouding of consciousness, or nausea/vomiting. The rapid worsening over minutes to hours is similar to ischemic stroke, but headache and vomiting tend to be more prominent.

Hypertension is the most common cause, accounting for approximately 50-70% of all cerebral hemorrhages. Prolonged high blood pressure damages small brain vessels, making them prone to rupture. Other causes include blood thinner (anticoagulant) use, cerebral amyloid angiopathy (common in the elderly), ruptured cerebral aneurysm, vascular malformations (AVM), tumor hemorrhage, and hematologic disorders.

Cerebral hemorrhage is an emergency where time is critical. If symptoms appear, call emergency services immediately for transport to the emergency room. At the hospital, diagnosis can be made within minutes via CT scan. Do not leave the patient alone. If unconscious, secure the airway and turn the head to one side to prevent aspiration of vomit. Never give food or drinks.

Rapid blood pressure reduction is the cornerstone of treatment. Research shows that quickly controlling systolic blood pressure to 140 mmHg or below helps suppress hematoma expansion. If the patient is on anticoagulants, immediate reversal therapy is administered. When the hematoma is large or consciousness deteriorates, surgery (craniotomy for hematoma evacuation or endoscopic aspiration) may be necessary. Intracranial pressure monitoring and intensive management are provided in the neurocritical care unit.

Recovery after cerebral hemorrhage depends on the location and size of the hemorrhage, age, and overall health status. Approximately 40-50% of patients die within 30 days, and approximately 75% of survivors are left with some degree of functional disability. Starting rehabilitation (physical therapy, speech therapy, occupational therapy) early helps functional recovery. The most important factor is preventing re-hemorrhage, with blood pressure management and treatment of the underlying cause (anticoagulant adjustment, etc.) being essential.

Blood pressure management is the most important factor. Maintaining systolic blood pressure at or below 130 mmHg can significantly reduce the risk of cerebral hemorrhage. Take prescribed blood pressure medications without missing doses and check blood pressure regularly. Lifestyle management includes smoking cessation, moderate alcohol consumption, regular exercise, and a low-sodium diet. If you are taking anticoagulants, regular blood tests to monitor drug effect are necessary.

References

  1. [1] van Asch CJ, Luitse MJ, Rinkel GJ, van der Tweel I, Algra A, Klijn CJ (2010). "Incidence, case fatality, and functional outcome of intracerebral haemorrhage over time, according to age, sex, and ethnic origin: a systematic review and meta-analysis." The Lancet Neurology, 9: 167-176. DOI PubMed
  2. [2] Hemphill JC, Greenberg SM, Anderson CS, Becker K, Bendok BR, Cushman M, et al. (2015). "Guidelines for the management of spontaneous intracerebral hemorrhage." Stroke, 46: 2032-2060. DOI PubMed
  3. [3] Anderson CS, Heeley E, Huang Y, Wang J, Stapf C, Delcourt C, et al. (2013). "Rapid blood-pressure lowering in patients with acute intracerebral hemorrhage." New England Journal of Medicine, 368: 2355-2365. DOI PubMed
  4. [4] Qureshi AI, Palesch YY, Barsan WG, Hanley DF, Hsu CY, Martin RL, et al. (2016). "Intensive blood-pressure lowering in patients with acute cerebral hemorrhage." New England Journal of Medicine, 375: 1033-1043. DOI PubMed
  5. [5] Keep RF, Hua Y, Xi G (2012). "Intracerebral haemorrhage: mechanisms of injury and therapeutic targets." The Lancet Neurology, 11: 720-731. DOI PubMed

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