Which condition can lead to an increase in intracranial pressure?

An increase in intracranial pressure (ICP) is often associated with various medical conditions, with meningitis being a primary example. Meningitis is an inflammation of the protective membranes surrounding the brain and spinal cord, known as the meninges. When these membranes become inflamed due to infection, they can cause swelling and increased fluid accumulation, leading to elevated ICP. The pressure can further disrupt normal brain function and may result in severe complications if left untreated.

In contrast, dehydration typically reduces blood volume, which might lower intracranial pressure, while frequent exercise does not directly relate to increasing ICP and usually has beneficial effects on overall brain health. Low blood pressure can also reduce cerebral perfusion, potentially leading to lower ICP rather than an increase. Thus, meningitis stands out as the condition most directly linked to increased intracranial pressure due to its inflammatory effects.