What are common symptoms associated with hyperactive delirium?

Hyperactive delirium is characterized by an acute change in consciousness and attention, coupled with a fluctuating course of symptoms. One of the hallmark features of hyperactive delirium is heightened levels of agitation and aggressiveness. This manifests as restlessness, irritability, and sometimes even physical aggression toward caregivers or the environment. Individuals experiencing hyperactive delirium may appear excessively alert, exhibit unpredictable behavior, and display signs of increased motor activity, which distinguishes it from other types of delirium, such as hypoactive delirium where individuals may appear more subdued or lethargic.

The other choices present symptoms that are more aligned with different types of mental status changes. For instance, disorientation and apathy are more representative of hypoactive delirium or depression rather than hyperactivity. Memory loss and confusion can occur in various types of delirium, but they do not specifically indicate the hyperactive form. Calmness and reflective thinking would be antithetical to the characteristics of hyperactive delirium, as this condition is marked by a lack of calmness and a disorganized thought process rather than a reflective state.