What disease is the antidote Jiang Yuduo?

In the novel Antidote, Jiang Yu got schizophrenia. Before Jiang Yuduo met Ke Cheng, there were always them in Jiang Yuduo's world. In order to get rid of the illusion of them from time to time, Jiang Yuduo has been torturing himself and getting rid of the bondage of childhood shadows with pain.

Later, Jiang Yuduo was rescued by the police when he was a teenager, but the police who protected Jiang Yuduo died unfortunately, which added a layer of psychological hint to Jiang Yuduo, that is, everyone involved with him was in danger, which aggravated his illness.

Extended data:

In the novel "Antidote", Jiang Yuduo went to a psychologist who treated Ke Cheng in order to prevent him from getting hurt and losing control. After a period of rest, he returned to Ke Cheng's side, and at the same time acknowledged Ke Cheng's close relationship with himself.

However, due to incomplete treatment, Jiang Yuduo was only eager to prove to Ke Cheng that he was a mentally normal person. After struggling to suppress his painful fantasies for a while, his illness broke out again. This time, he finally sent his help to Ke Cheng. But Ke Cheng wanted to face Jiang Yuduo together, but Jiang Yuduo left without saying goodbye again, leaving a heartbreaking confession (farewell) letter.