Which type of stroke involves a blood vessel bursting and leaking into the interstitial space?

Hemorrhagic stroke involves the rupture of a blood vessel, leading to bleeding in the brain or into the interstitial space surrounding it. This type of stroke can occur due to various factors, such as hypertension or aneurysms, and results in increased pressure in the affected area, causing damage to brain tissues and potentially leading to significant neurological deficits.

In the case of a hemorrhagic stroke, the leaked blood can irritate surrounding tissues, exacerbate swelling, and create a cascade of chemical and cellular responses that further complicate the situation. The presence of blood in areas where it normally shouldn't be can disrupt normal brain functions, leading to symptoms such as headache, weakness, and altered consciousness.

Other types of strokes, like thrombic and embolic strokes, involve blockages in blood vessels that restrict blood flow rather than bleeding. A transient ischemic attack, while related to strokes, is characterized by temporary disruptions in blood flow without permanent damage, as opposed to the permanent damage often seen in hemorrhagic strokes. Therefore, "hemorrhagic stroke" accurately describes the condition where a blood vessel bursts and causes bleeding into the interstitial spaces of the brain.