My son aged 14 years(42Kgs)was diagnosed with beginning of typhoid and was given antibiotics myfexm and mexafile.  Eventhough there was some rashes on the first day, the same disappeared.  After the course is over, rashes are seen again on neck, chest, back and even face .  Is this measles or allergy to antibiotics?  If it is measles wil the above antibiotics cause any harm?
Hi and welcome to Chat Doctor. I appreciate your concern for your sons' illness in particular the rash take the courses of antibiotic for the treatment of typhoid. It appears to me that the rash that has developed is due to antibiotic induced Chat Doctor.  It will subside by its own in a course of time. You may give him Levocetrizine tablet along with Calamine lotion or low potency steroid (HY