Detailed answer

Melasma is a common skin condition characterized by dark patches on the skin. It is typically seen on the face, but can also affect the lips. Lip melanoma, on the other hand, is a type of skin cancer that develops on the lips. While both melasma and lip melanoma can cause pigmented areas on the lips, there are key differences between the two. Melasma is usually symmetrical and has a well-defined border, whereas lip melanoma may have irregular borders and may exhibit changes in color, size, or shape over time. It is important to consult with a healthcare professional for a proper diagnosis and appropriate treatment if you have concerns about your lip pigmentation.