A nurse is collecting data from a client who reports finding a new skin lesion. Which of the following actions is the nurse's priority?

A. Document the client's history of skin allergies: While documenting a history of allergies is important for overall assessment, it does not directly help determine the urgency or potential malignancy of a new skin lesion. It is supportive information, not the priority. B. Instructing the client on the use of daily sunscreen products: Educating the client about sun protection is important for long-term skin health and prevention, but it does not address immediate assessment or potential risks associated with the new lesion. C. Photograph the lesion for the client's medical record: Photographing the lesion can help track changes over time, but it is not the first step. Proper documentation is useful only after initial assessment and history collection. D. Identify when the client first noticed the lesion: Determining the onset of the lesion is the priority because it provides critical information about the lesion’s development and potential severity. Rapidly changing or newly developed lesions may indicate malignancy or require urgent evaluation, making this the first and most essential action.