Thank you for your question. A cold sore would be a sudden painful eruption, in the area of your lip. In comparison, comedones (pimples) are usually smaller, less painful, and may resolve in a shorter period of time compared to cold sores. Based on the photograph you provided, this appears that this lesion is more consistent with a pimple rather than a cold sore. If you are still concerned that this may be a cold sore, you can have a doctor examine it in person and take a swabbing of it to send for laboratory testing to detect the herpes simplex virus (the virus which causes cold sores).
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