GBM can impact a range of brain functions depending on the location of the tumour. Growth of the tumour can lead to a number of physical and cognitive problems, such as a loss of balance, memory issues, impaired vision and a reduced ability to speak. If your loved one begins to struggle to process and articulate things well, they might rely on you to interpret information and explain things in simpler terms, or in serious cases help make decisions on their behalf.
It’s a very difficult and sensitive subject, but consider discussing with your loved one their thoughts on this in advance. If they are up for the discussion, you might discuss the types of treatment they are comfortable with, what they’d like you to do for them should they become more ill, and plans for end-of-life care.