Thought disorder is a condition where someone’s thinking isn’t organized in a way that makes sense. People with thought disorder have problems organizing their thoughts, so their ideas and the words they use don’t always match up. For example, they might say something that doesn't make sense or jump from one idea to another without any connection. They might mix up words or repeat words. They might talk very quickly or in a way that doesn’t seem to make sense. People with thought disorder might also have memory problems and find it difficult to plan and organize things.