Yes, it can very very definitely affect brain function. Many of us experience fog to the levels you are describing. It can also be much more severe than brain fog. It can show up in an MRI as CNS Lupus, or sometimes it can be found by having neuropsych testing done.
I'm one of the unfortunates who has some actual measurable cognitive dysfunction that was proven through neuropsych testing. Brain function for me was much improved by a course of Cellcept, but I still seem to have residual damage and no one has any idea if it will improve or not.
However, don't be too worried. Dysfunction to the extremes I've experienced is fairly rare. You are more than likely in the "normal" fog range of the average Lupin...however, do make it clear what is happening to your doctor. They should be able to determine whether additional testing is needed or not, and prescribe some treatment that might help.
Lynnwood, Co-Moderator: Lupus Forum
SLE(’00), Sjogren's Syndrome, Raynaud's Syndrome, SAD, Depression, Herpes Simplex 1
Piroxicam, Plaquenil, Prednisone(was 15mg, now 8mg),
Cellcept, Xanax, Trazodone, Boniva(3mth shot), Wellbrutrin SR, Valtrex
Links: DIAGNOSING LUPUS (4 of 11), LUPUS INFORMATION, LUPUS RESOURCES, Donate to HealingWell, Drug Interactions