To explain antibiotic, let's take an example of a child that fell off from her bike.
The child experienced fever and fatigue afterwards because there is an underlying infection going on from the site of the wound. The best thing that a mother or a guardian should do is to give the child antibiotic, so that, the fever will subside.
The mother did give her antibiotic which helped the child's health condition without causing other complications because it is the right and therapeutic thing to do for her child.
WHAT HAPPENS WHEN A PERSON IS ANTIBIOTIC RESISTANT?
Antibiotics have 2 sole purpose: 1) kills the bacteria and 2) inhibits its growth and/or reduce its probability to reproduce. In the case of antibiotic resistance, when a person is ill because of a virus, consecutive intake of antibiotics can only worsen the health of a person. It is so because, antibiotics are intended only for bacteria and bacteria evolve fast. To elaborate, a particular bacteria maybe eliminated or inhibited of a certain antibiotic, but there is a possibility that it can be resistant once that antibiotic is introduced again to that same bacteria.
Antibiotics does not work on diseases or conditions caused by viruses. Therefore, it is best that one should ask for consultation from a licensed physician, so that, complications will be prevented caused by uninformed self-treatment.