What is a common side effect of antifungal medications?

Skin irritation is a common side effect of antifungal medications. Many antifungal agents, especially topical formulations, can cause localized skin reactions. This can manifest as rashes, itching, or redness at the application site. Antifungal medications work by targeting fungal cell membranes or metabolic processes, which may lead to irritation of the skin or surrounding tissues.

The other options do not accurately represent typical side effects of antifungal medications. Increased appetite is not a known side effect, as antifungals primarily focus on fungal infections rather than influencing appetite. A reduction in fever is unrelated, as fever is a symptom of infection and not a direct result of antifungal treatment. Enhanced viral blocking is not applicable, as antifungal medications are specifically designed to treat fungal infections and do not have an effect on viral pathogens. Thus, skin irritation is the most relevant and recognized side effect associated with antifungal therapy.