Which event results in a persistent deficit due to brain injury?

• A. TIA
• B. Paresthesia
• C. Dysesthesia
• D. CVA

Answer: (D)

When brain injury leads to long‑lasting problems, it’s usually because brain tissue has been damaged by an event like a stroke. A cerebrovascular accident injures brain tissue through either ischemia or bleeding, producing persistent neurological deficits that depend on the brain area affected. In contrast, a transient ischemic attack is a brief interruption of blood flow that resolves quickly and leaves no lasting brain damage, so deficits don’t persist. Paresthesia and dysesthesia describe abnormal sensory experiences rather than the brain injury event itself; they can occur with various conditions and aren’t by themselves the cause of a lasting deficit a brain injury would produce.