Soon after, I developed an oval shaped, fairly small itchy rash on my upper chest that spread to the size of a quarter. Now, just three weeks ago, I developed two more behind my knees that are just as ...

Lupus can affect the skin and cause rashes anywhere on the body. People may experience a lupus rash on the chest following exposure to sunlight. Systemic lupus erythematosus (SLE) is the most ...