Which factor is NOT considered when choosing an antifungal drug?

When selecting an antifungal drug, factors such as the patient's organ function, concurrent medications, and the severity of the fungal infection play significant roles in ensuring that the chosen therapy is both effective and safe. Assessing organ function is crucial because antifungal agents can be renally or hepatically cleared, and compromised organ function may require dose adjustments or the selection of an alternative treatment to avoid toxicity.

Considering concurrent medications is also vital, as drug interactions can alter the effectiveness of antifungal therapy or increase the risk of adverse effects. The severity of the fungal infection is directly linked to treatment decisions, as more aggressive infections may necessitate more potent antifungal agents or combination therapy.

In contrast, while a patient's age can influence drug metabolism and response to treatment, it is generally not a primary consideration compared to the other factors listed. Therefore, age, while relevant in some contexts, is not typically a decisive factor in the selection of antifungal agents, making it the correct choice in this instance.