孤独患者alone
[gū dú huàn zhĕ alone]
The phrase conveys the feeling of someone who is experiencing loneliness or isolation. '孤独' means 'loneliness' or 'solitude', while '患者' means 'patient', implying that this individual feels they are suffering from being lonely, almost as if it were a sickness. The addition of 'alone' reinforces this idea in English.