AKT-3151

AKT-3151

You prescribe an antibiotic to an elderly patient with a urinary tract infection (UTI). Two days later they come to see you, reporting that they have developed a blistering rash over their chest and trunk. They are otherwise well, and there is no obvious cause for their symptoms. They stopped the antibiotics when the rash appeared and do not wish to restart them. Reading the British National Formulary (BNF), you learn that a rash is not a reported side-effect of the drug. The rash settles down after three days.
What is the most appropriate advice?