Hi I have a friend who has stage 4 cancer, and I have noticed a change in her attitude is it because of the stage of denial, or is it affecting also her brain in anyway. Her attitude severely changed as soon as her health deteriorated. She tells lies she is moody and easily angered in any situation.
Thanks for your question on Chat Doctor. Both are correct. Stage 4 cancer can cause great impact on psychology of patient and this start reflecting in motor behavior.  So patient becomes very Rudy, irritated and depressed. Spread in brain can also cause similar symptoms. So we need to get done MRI brain first. If this is normal than psychological counselling is needed. In any case prognosis is not good.