Aisan Male in high 20s with a job in IT started to report sever headache a month ago, accomanied by uncontrollable shaking of hands and tounge. These symptoms were followed by progressively developed symptoms of disorientation. He occasiaonlly reported not feeling living in reality and had to check with friends where he was and told them that he didnt feel real. Symptoms became progressively worse that he lose contact with reality. He now lose friends' identity. He has now been hospitalized for 10 days. He now cannot take care of himself at all. He is now basically unresponsvive for any question and when he responded occasionally, speech is basically uncomprehensable. He is occasionally having some seizure like symptoms such as muscle spasm. So far, every test is NEGATIVE, including CT, MRI, blood smaple, CSF etc. 24 hours EEG monitor is also normal. Urgently need some opinions. Thanks so much