What is a common side effect associated with steroids?

Weight gain is a common side effect associated with steroid use, particularly corticosteroids. These medications can cause increased appetite and alterations in metabolism, leading to the accumulation of fat and overall weight gain. Additionally, steroids can lead to fluid retention, which can further contribute to an increase in body weight. This effect can be particularly pronounced with long-term use or at higher doses.

The other options, while they can occur under certain circumstances, are not as typically associated with steroid use as weight gain. Hair loss can happen with various conditions but is more commonly linked to other factors such as genetics or hormonal changes, rather than steroid use itself. Hypotension is not a typical side effect of steroids; in fact, they can sometimes cause elevated blood pressure. Rashes can occur due to allergic reactions or as a side effect of medication, but they are not as commonly linked to steroids specifically compared to weight gain. Therefore, the association of steroids with weight gain makes it the correct choice in this context.