Epidemiology, Risk Factors, and Clinical Features of Intracerebral Hemorrhage: An Update

Area of Science:

• Neurology
• Vascular Neurology
• Public Health

Background:

• Intracerebral hemorrhage (ICH) is a major cause of stroke-related disability and death.
• ICH disproportionately affects certain demographics, including Asians, older adults, and males, particularly in low- and middle-income countries.
• High case fatality rates and limited functional independence in survivors underscore the critical nature of ICH.

Purpose of the Study:

• To summarize the epidemiology, risk factors, clinical presentation, and emerging management challenges of intracerebral hemorrhage.
• To highlight the increasing incidence of anticoagulation-related ICH and the need for strategies for novel oral anticoagulants.

Main Methods:

• Review of existing literature on intracerebral hemorrhage.
• Analysis of demographic data, risk factors, and clinical outcomes associated with ICH.
• Examination of trends in anticoagulation use and associated ICH management.

Main Results:

• Key risk factors for ICH include hypertension, smoking, alcohol consumption, and hypocholesterolemia.
• Advanced age, male sex, Asian ethnicity, chronic kidney disease, cerebral amyloid angiopathy (CAA), and cerebral microbleeds (CMBs) are significant risk factors.
• Clinical presentation is variable, influenced by hematoma size, location, and intraventricular extension; CAA-related ICH often presents with cognitive impairment.

Conclusions:

• ICH is a critical neurological emergency with significant mortality and morbidity.
• Emerging challenges include managing anticoagulation-related ICH, particularly with the increasing use of non-vitamin K antagonist oral anticoagulants (NOACs).
• Further research and clinical strategies are needed to address the growing burden of NOAC-associated ICH.