Common side effects of skin medications include all of the following except:

The answer is based on the common side effects associated with topical skin medications. Burning sensations, itching, and swelling are typical reactions that can occur when applying skin medications, especially when the active ingredients are irritating or when the skin is sensitive or compromised. These effects often result from the way these medications interact with the skin's surface or penetrate into deeper layers, causing transient reactions.

In contrast, loss of hair is generally not a common side effect associated with topical skin medications. While certain systemic medications or treatments (such as chemotherapy or hormonal therapies) may lead to hair loss, topical medications typically do not affect hair follicles to such an extent as to cause hair loss directly. As a result, the option related to loss of hair stands out as the correct answer as it does not fit within the expected range of typical side effects for skin medications.