Which of the following would NOT be a sign of increased intracranial pressure (ICP)?

Increased intracranial pressure (ICP) can manifest through a variety of neurological symptoms due to the compression of brain structures and disruption of normal blood flow and cerebrospinal fluid dynamics. While all the other options listed are recognized signs of elevated ICP, short-term memory loss is less directly associated with increased ICP.

Posture-dependent headaches typically indicate variations in intracranial pressure that can cause discomfort, often escalating when the individual is upright due to changes in the pressure gradient. Visual disturbances, such as blurred or double vision, can occur due to pressure on the optic nerve or other brain structures, reflecting the disruption caused by increased ICP. Severe lethargy is indicative of compromised brain function and is a common consequence of elevated ICP, as it can impair consciousness and overall brain activity.

In contrast, short-term memory loss is not a classic sign specifically tied to ICP elevation. While it can be seen in various neurological conditions and can emerge due to brain dysfunction, it is not as directly linked to the mechanical effects of increased pressure in the cranial cavity as are the other options. Thus, this symptom does not align with the immediate manifestations typically seen with increased ICP.