What symptoms indicate an allergic reaction in a client?

An allergic reaction is typically characterized by symptoms that arise from the immune system's response to an allergen. Erythema, which refers to redness of the skin, is a common sign indicating an allergic reaction, often resulting from the dilation of blood vessels in the affected area. Watery eyes are another hallmark of allergy symptoms due to the body’s attempt to flush out the irritants. This combination of erythema and watery eyes suggests that the body is responding to an allergen.

The other options present symptoms that may not distinctly categorize an allergic reaction. Dry skin and redness can occur due to various reasons, including environmental factors or skin conditions that are not necessarily allergic in nature. Increased heart rate can also be a response to stress or other medical conditions rather than a specific indication of an allergic reaction. Skin peeling and flaking is often associated with dryness or particular skin conditions, but it doesn’t typically signify an allergy. Therefore, the presence of erythema and watery eyes is a clear set of symptoms that point specifically to an allergic reaction.