Which complication can occur from antibiotic use?

The correct choice is related to the impact of antibiotic use on the body’s natural flora. Antibiotics are designed to kill bacteria, but they often do not selectively target only harmful bacteria. This can lead to a disruption in the balance of normal microbiota in the body.

As a result, the reduction of beneficial bacteria allows opportunistic pathogens, such as Candida species, to proliferate. This overgrowth can result in a Candida infection, which commonly manifests as thrush or a yeast infection. This condition arises specifically because antibiotics diminish the microbial diversity that normally keeps Candida growth in check.

In considering the other complications mentioned, while acute glomerulonephritis, dehydration, and electrolyte imbalance are potential health concerns, they are not directly linked to the use of antibiotics in the same manner as the specific risk for Candida infections. Therefore, the primary risk associated with antibiotic use, especially concerning opportunistic infections, underlines why Candida infection is the most pertinent complication in this scenario.