The most wonderful thing about lupus (not) is that no two cases are alike. I also have severe itching on various parts of my body, including my hands, feet (difficult to scratch when you are tickleish there), chest, face and scalp. Sometimes benedryl topical cream helps my hands and feet, also taking a benedryl capsule when the itching is really bad helps as well. My itching comes from the sun, stress and also certain kinds of foods or lotions affect my skin. Also if I ill with an infection of some kind usually my skin becomes involved.
Taking a warm bath in aveeno which has oatmeal also works well. Other then that there really is no quick fix for any of these things. I have learned by trial and error. Doctors, whether from a small town or large city, still don't know all the ins and outs of lupus. A lot of time they are going on trial and error as well.
Good luck to you.