October 2019: Changes have been made to recommendations 1.9.6, 1.9.9, 1.9.10 and 1.9.11 to reflect new restrictions and precautions for the use of fluoroquinolone antibiotics. These recommendations are labelled [new 2014, amended 2019].
November 2014: recommendation 1.7.7 has been amended to clarify the type of NSAID to be used and that a proton-pump inhibitor should also be prescribed.
September 2014: This guideline updates and replaces NICE guideline CG17 (published in April 2004).
Recommendations are marked as [new 2014], ,  or [2004, amended 2014]:
[new 2014] indicates that the evidence has been reviewed and the recommendation has been added or updated
 indicates that the evidence has been reviewed but no change has been made to the recommended action
 indicates that the evidence has not been reviewed since 2004
2014] indicates that the evidence has not been reviewed since 2004, but changes have been made to the recommendation wording that change the meaning.