If you have seen that you have a brain tumor in your dream: Giving nervous or emotional reactions can harm your plans, it is useful to be more controlled, you should be understanding to the people around you, and you should provide them with the freedom you want for yourself. To see that you have a brain tumor in your dream is interpreted as your existing fears. For a person who has health problems, it also indicates the mood he is in. It reflects that you need to let go of these fears.