An aneurysm often looks like a berry hanging on a stem. Experts think brain aneurysms form and grow because blood flowing through the blood vessel puts pressure on a weak area of the vessel wall.

An aneurysm often looks like a berry hanging on a stem. Experts think brain aneurysms form and grow because blood flowing through the blood vessel puts pressure on a weak area of the vessel wall.

In 1995, following Bill Berry’s operation for a brain aneurysm that caused him to collapse onstage during a show, R.E.M.announced they would resume their worldwide Monster tour. Even though ...