When inspecting the client's skin, the nurse observes several areas of ecchymosis on the trunk and extremities. Which information in the client's history requires additional follow-up by the nurse?

A. Recently had dental surgery. While relevant, dental surgery is less likely to explain multiple areas of ecchymosis. B. Works in a day care center. This is not directly related to the presence of ecchymosis and does not require immediate follow-up. C. Takes an oral anticoagulant. Anticoagulants can increase the risk of bleeding and bruising, which requires follow-up to ensure the client is not experiencing excessive anticoagulation or bleeding complications. D. Adheres to a gluten-free diet. This is less likely to be related to the presence of ecchymosis unless there is a concern for nutritional deficiencies, which is less immediate than anticoagulant use.