Answer :
When the narrator found that he had all the premonitory symptoms of hail fever, he was frozen with horror. he began to read the symptoms of some other diseases. he read the symptoms of typhoid fever and discovered that he had typhoid fever. then he wondered what else he had got and found that he had also got St. Vitus's Dance. he began to get interested in his case and started to read alphabetically. then he found that he was suffering from all other diseases except housemaid's knee.the narrator felt rather hurt about this at first ; it seemed somehow to be a sort of insult. he began to worry why hadn't he got housemaid's knee? he sat and pondered. he thought what an interesting case he must have been from a medical point of vie, what an acquisition he should have been to a class. he thought students would have no need to walk the hospitals if they had him. he was a hospital in himself.
