People with Lupus (and other AI diseases) are prone to get some type of skin involvement as part of their illness. Skin involvement usually is in several categories: Butterfly rashes - Lesions - vasculitis rashes - Non-specific rashes (rashes seen in Lupus as well as in other diseases). Non-specific rashes are seen in diseases other than lupus, but are extremely common in people with SLE. These rashes may be red blotchy rashes similar to the rash caused by a number of viruses, and similar to the rash caused by a variety of drugs (so-called drug-rash). These blotches may or may not be elevated and may be pink or red. They generally are found on the face, chest, back, and upper arms, and may or may not be itchy. This type of rash disappears quickly if patients are treated with corticosteroids (such as Prednisone)for their other symptoms. Vasculitic rashes are seen frequently in people with SLE, especially in acutely ill patients. These rashes are non-specific because they may be present in patients who do not have lupus. For example, a small number of individuals with rheumatoid arthritis develop vasculitic rashes. There are a wide variety of rashes due to vasculitis, including: tender bumps in the tips of the fingers or toes; rashes that look like splinters under the nailbeds; ulcers that form around the ankle joints or on the legs; and tender red bumps on the shins.
What you are dealing with is, unfortunately, quite common in auto-immune diseases and ESPECIALLY with Lupus. I realize that you have not been diagnosed yet. However, this should not prevent your doctor from prescribing something to help alleviate these symptoms.
Best Of Luck
Peace and Blessings
Look For The Good and Praise It!