In paragraph 2, the narrator mentions various annoyances, such as ringing in the ears, memories, or music that gets stuck in our heads. The author includes this information

To build tension

Explanation:

Hello. You did not enter the text to which this question refers, which makes it difficult to formulate a specific answer. However, when a narrator presents discomfort as mentioned in the question above, he is trying to show discomfort and disadvantages that he feels in relation to something and this creates tension in the plot, because the reader can perceive that the narrator will face difficulties that will leave the story more challenging.

the sentences are -

it was all just as it was in the law courts. the doctor put on just the same air towards him as he himself put on towards an accused person.