You friend is very lucky to have someone who wants to help and to understand this illness that she could possibly have. Lupus affects each one of us differently, so we do not present with the same set of symptoms when being diagnosed. Some people do get the butterfly rash, others do not. There are many different types of rashes with Lupus, some are painful and some are not.
The ANA titer is only one of many tests that have to be considered before making a diagnosis and there are several other diseases that have a positive ANA. While approximately 99% of the people with Lupus do have a positive ANA, there are many who have ANA Negative Lupus. A positive ANA test means that autoantibodies are present and by itself, the ANA test does not indicate much of anything. For Lupus, most labs use an ANA titer of 1:160 or above to indicate a positive result. A positive ANA reading is supposed to tell the doctor to KEEP LOOKING. Her doctor will need more blood tests in conjunction with her medical history and the symptoms that she is displaying, before a diagnosis can be made.
Please read through some of the "stickys" on the top of each forum, you will find a wealth of information in them. May I also suggest that you visit the "Lupus Foundation's" web site for more information and answers.
I wish you friend the very best and you, as well.
Peace and Blessings
Look For The Good and Praise It!