<prompt> Typhoid intestinal perforation is usually occurs in which week of typhoid fever?2nd - 3rd week4th - 5th week5th - 7th week6th - 8th week  <response>: Ans. is a i.e., 2nd - 3rd week In the second or third week of the illness, if there is severe generalised abdominal pain, this heralds a perforated typhoid ulcer. The patient, who is already very ill, deteriorates further with classical features of peritonitis. An erect chest X-ray or a lateral decubitus film in the very ill, as they usually are will show free gas in the peritoneal cavity. In fact, any patient being treated for typhoid fever who shows a sudden deterioration accompanied by abdominal signs should be considered to have a typhoid perforation until proven otherwise. 