1. Examine the Rash for Classic Features of Lupus Rash
A so-called butterfly rash (known technically as "malar erythema") is the most common sign of lupus. This rash stretches from the cheeks across the bridge of the nose and can be bluish or purplish in color. One telltale sign of malar erythema is that the areas right under the nostrils and above the lip are generally not affected by the rash. There are other facial rashes which could indicate lupus, as well. For instance, subacute cutaneous and discoid rash abnormalities may be indicative of the disease.
2. Rule out Other Possible Causes for the Rash
Dozens of factors can lead to rashes which, on the surface, may resemble lupus-like skin abnormalities. An allergic reaction to an environmental toxin, a brush with poison oak and even certain patterns of skin bruising due to shaving or waxing can resemble a traditional lupus face rash. Look for other possible causes like a recent encounter with a pet to which you might be allergic, a recent sunburn or other skin aggravation.
3. Check for Other Lupus Symptoms and Risk Factors
Lupus presents differently in different patients. However, some common symptoms include stiffness of the joints, high fevers that last longer than traditional flu-like fevers, seizures, protein traces discovered in your urine sample, edema in the lower legs and ankles, blue fingers or toes, sores that don't heal and hair loss that is quick and unexplained.
Gender and race also play a factor. Women have 10 times the greater risk of developing the disease, and Hispanic and black women, in particular, often find themselves at risk.
4. Biopsy Under a Doctor's Supervision
Only a physician using proper medical tests can assess the presence or absence of lupus to an exacting degree. If your rash indicates that you may have lupus, talk to your doctor about getting blood work done to evaluate your blood count, circulatory functioning, kidney functioning and skin condition.
