Schizophrenia, psychotic disorders, personality disorders, ptsd, substance abuse, dementia and many more. Half of the DSM 5 is an option. Even a brain tumor would be possible. Could be a real scenario of a stalking victim or a nightmare. Doesn´t have to be hallucinations related to mental health.
What I am getting at, i don´t like your game at all. I don´t think it is fair or funny and shouldn´t be played at all. Especially people mental heath disorders have a high comorbidity rate. Everyone is different. Disorders and illness is way too complex to be broke down into a one or two liner by someone who is not affected or suffering from it directly or indirectly.