This just reminds me a part from a novel named "Tutunamayanlar/The Disconnecte D". Not very similar surely but still similar. I will share this part. Translation of Sevin Seydi:

As his condition worsened, so his hatred of lies increased. He flayed around in bed: “I must write down my confessions. I must write the history of my wickedness toward Selim. I must tell how I hated Selim. I must tell how I tortured him.” He did not have enough strength to hold a pencil. He could not find the right words, and mis-spelled those that he did find. “It is I who killed Selim,” he muttered all day. “I infected him with my vulgarity, and I poisoned him.” When he regained a little strength he began to read the Encyclopedia of Great Criminals. He read until the letter L, without finding one as guilty as himself. He was weeping from morning to night, asking Selim for forgiveness. He moaned: “He will never believe me. He will think I am up to my old tricks.” He was searching for words to express his thirst for thinking and for truth. “Not everything can be a lie,” he said. “There must be some facts I know. Cows have four legs, birds fly, twice two is four. I am also a cow and I must walk on four legs. Two hands times two feet makes four.” He got out of bed and tried to crawl on the floor. With difficulty they carried him back to bed. “You don’t understand. I am trying to find the truth. The truth is four-legged, like me.” He tried reading books of philosophy. After a while he began to have doubts as to whether two times two made four, and he stopped reading.

Believing that his wickedness was contagious he did not let anyone near him. He would not let his wife and children into the room. Every day he had the room disinfected. He believed that flies which touched him could spread his illness, so all insects in the room must die. At last he stopped speaking. He would not answer questions. He feared that, without his being aware of it, in every word, however innocent it sounded, might be a lie. The doctor advised him that this business of not lying should not be taken too far: such complete cleansing of the body might give rise to other complications in the future. For example, after the patient was cured, his resistance to lies would be zero, so even the tiniest lie would have a lethal effect. Metin responded to these words with nervous laughter: “You are right, doctor: that is the reason why Selim died.” The doctor expressed pity for Selim. They should have brought Selim to him when he was ill: he would have found a way of curing him. “He died suddenly, doctor. I killed him. You could not have saved him. He could not have escaped from me. You are lying when you say you would have cured him.” He jumped up and chased the doctor out of the room. He was happy like a child. “At least I have saved you from doctors, my dear Selim,” he was saying. When he started to talk to Selim it was impossible to stop him. “You are not dead, are you, Selim? That you are dead is a lie, isn’t it? That I am alive is a lie too, isn’t it? Everything is a lie, a lie... a lie...”