We know logically that some dreams are not real but still can’t escape from them so why don’t you understand psychosis? As my mind is absorbed in a thought pattern that might seem unreal to others but appears quite real to my mind. The only difference is my dream pattern occurs with me with my eyes wide open. Therefore don’t judge my sickness unless you slept in one similar to my mind.
FOOTNOTE- What is real in ones mind might be quite unreal to many other minds.