As we grow old our chances of developing a brain disorder increase. It’s a normal part of growing old as a lot of people develop one or the other type of brain disorder as the brain gets older and weaker. But sometimes these disorders can affect us at a young age as well. Either way there are telltale signs of a brain disorder rearing its ugly head that we can watch out for. Whether a person is old or young if they start showing a lot of the following signs they should be checked for mental illness.