New Delhi, May 24 -- On May 23, veteran musician Billy Joel cancelled his upcoming concerts due to recent health concerns. In a statement released by his team, it was revealed that he has been diagnosed with a brain condition known as Normal Pressure Hydrocephalus, or NPH for short.

So, what exactly is this condition - and what happens in it?

NPH or Normal Pressure Hydrocephalus is a condition in which there is fluid development inside or around the brain. This condition disrupts normal brain function. It hampers several brain-related abilities, including thinking and concentrating, memory, movement and more. While its symptoms often resemble dementia, NPH is at times reversible.

NPH is most common in people over 65, becoming more and ...