A gallbladder attack is defined as an episode in which an improperly functioning gallbladder creates a great deal of pain, nausea, and dizziness.In many cases, a gallbladder attack will evidence symptoms that are very similar to those of a heart attack. gallbladder attack may be associated with the presence of gallstones. A gallstone may be composed of elements such as excess cholesterol, calcium, or other bile elements that pass through the gallbladder.