精神病患者无药可医神经病患者有药难医
[jīng shén bìng huàn zhĕ wú yào kĕ yī shén jīng bìng huàn zhĕ yŏu yào nán yī]
A humorous phrase translated as "mental illness patients can't be cured, mental disorder patients can't get medication either" suggesting the speaker's frustration at dealing with difficult personalities, often used self-deprecatingly.