First of all, I'm so sorry that your daughter is so ill, and I hope she gets good treatment and feels better soon. I am not a Dr. or a medical professional, only and SLE patient, so I can not make any sort of diagnosis, only share my experience with you. The summer before my diagnosis, I did experience brief periods of vision loss like your daughter is describing. At the time this was going on, I also noticed little redish purple streaks on my skin extending from the lash line on my lower eye lid down to the top of my cheek. I began having trouble with my eyes being dry and irritated at about the same time. I also experience my fingers, toes/feet and nose, sometimes ears as well, changing colors and I have pain and tingling when this happens......My Dr. says it is Raynauds disease, which is common in people with Lupus. I have very bad headaches, and, after seeing a neurologist and being diagnosed with Lupus, was told that my headaches are caused by a certain lupus antibody that I have that can break the blood brain barrier and cause inflammation of the blood vessels in the brain resulting in horrible headaches. Once I began treatment for the Lupus, which included prednisone, the headaches greatly decreased in frequency. APS, anti-phospholipid-syndrome, occurs in a lot of people with Lupus. It can cause strokes etc.. It can be pretty well controlled with treatment. You may want to ask your daughters Dr. if she is testing for APS as well as Lupus, just to be sure. As for what my gut says, if she were my daughter, and had those symptoms and a positive ana....I would definitely persue testing for Lupus as well as Scleroderma and MS just to be certain. I say MS because of the numbness in the legs, MS and Lupus share a lot of similar symptoms, and both are autoimmune. Whatever you do, don't let this Dr. off of the hook until you have firm answers, your daughter is experiencing some scary stuff. Whether it winds up being Lupus, MS or scleroderma or something else, the sooner she begins treatment the better! I wish you both all of the best, take care