Hello! Thanks for putting your query in HCM. I am a Gastroenterologist (DM).
It may be due to lupus itself an autoimmune disease
or may be due to some other cause like:
1. If you are obese or overweight you need to reduce your weight
2.Other common and treatable causes like Hepatitis B and C virus, Serum ceruloplasmin
for wilson disease especially if you are young, ANA and SMA for autoimmune disease
3. Lipid profile
I will advise you to visit a Gastroenterologist who will advise you for above tests. If they all are negative then he may advise for liver biopsy to see for autoimmune hepatitis
Meanwhile I will advise you to take tablet ursodeoxycholic
acid and vitamin E and do regular exercise which I found very useful in my patients with fatty liver
I hope I have answered your query and this will help you. If you have any further query I will be happy to answer that too. Remain in touch and get-well soon.