Which of the following is a common side effect of corticosteroids?

Hypertension is a common side effect associated with corticosteroid use due to their influence on fluid retention and sodium balance in the body. Corticosteroids can lead to an increase in blood volume through sodium retention, which can elevate blood pressure. Additionally, corticosteroids may stimulate the renin-angiotensin-aldosterone system, further contributing to hypertension.

While some of the other options represent potential side effects to varying degrees, they are not as commonly associated with corticosteroid therapy. For example, hypoglycemia is less likely to occur; in fact, corticosteroids often cause elevated blood glucose levels instead. Dry skin and hair loss can also occur but are usually not as direct or significant as the increase in blood pressure seen with corticosteroids. Thus, the relationship between corticosteroid use and hypertension is well-documented in pharmacology, making it the correct answer.