Ischemic Stroke: This is the most likely diagnosis given the context of CVD (cerebrovascular disease) infarct, as it directly relates to the obstruction of blood flow to a part of the brain, leading to tissue death.

Hemorrhagic Stroke: This is another likely diagnosis when considering a bleed, as it involves bleeding into or around the brain, which could be due to various factors including hypertension, aneurysms, or arteriovenous malformations.
Transient Ischemic Attack (TIA): Although not as severe as a full infarct, a TIA or "mini-stroke" could present with similar symptoms and is a significant consideration in the differential diagnosis due to its implications for future stroke risk.

Subarachnoid Hemorrhage: A potentially life-threatening condition that requires immediate intervention. It might not always be the first consideration but missing it could be catastrophic.
Venous Sinus Thrombosis: Although less common, this condition can present with symptoms similar to arterial stroke and is critical not to miss due to its need for specific treatment, such as anticoagulation.
Cerebral Vasculitis: An inflammation of the blood vessels in the brain, which could mimic stroke symptoms and requires prompt diagnosis and treatment to prevent further damage.

Cerebral Amyloid Angiopathy: A condition characterized by the deposition of amyloid beta peptides in the blood vessels of the brain, leading to hemorrhages or infarcts. It's more common in older adults and those with Alzheimer's disease.
Moyamoya Disease: A rare condition caused by narrowing or blockage of the internal carotid artery and its branches, leading to reduced blood flow to the brain. It can cause strokes, TIAs, or other symptoms similar to those of CVD infarct or bleed.
Reversible Cerebral Vasoconstriction Syndrome (RCVS): A condition that mimics stroke, characterized by temporary narrowing of the blood vessels in the brain, often accompanied by thunderclap headache. It's crucial to diagnose to avoid unnecessary anticoagulation or other treatments.