Which event features a deficit that continues after onset?

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

Answer: (B)

The main idea is distinguishing transient versus lasting deficits after a neurological event. A deficit that continues after onset points to a stroke (cerebrovascular accident), because brain tissue is damaged and the resulting motor, sensory, or cognitive impairments can persist or be permanent.

A stroke causes irreversible or long-lasting injury from either ischemia or hemorrhage, so deficits that begin at onset do not fully resolve. In contrast, a transient ischemic attack involves a temporary reduction in blood flow with symptoms that resolve within a short time, so there is no lasting deficit. Sensory phenomena like paresthesias and dysesthesias describe abnormal sensations and can occur with various conditions, but they are not by themselves defined as persistent functional deficits after the event.