The identification methods of lupus erythematosus are as follows: 1. Look: generally the rash of lupus is on exposed parts, rarely on the body to the Director, so it is generally more common on the exposed parts of the head, face, neck and limbs; 2. Ask: then ask if there is itching and pain; 3. Check: the check is to scrape the scales, whether there are scales, whether the scales are good to scrape, then touch the rash whether there is infiltration, and then touch up to see if the patient has sensory loss; 4. Finally, it is the relevant laboratory tests, which can be identified.