The precursors of female lupus erythematosus include generalized fever, skin changes, muscle and joint pains, proteinuria, shortness of breath, mood disorders and loss of appetite. 1. Generalized fever: most patients in the active stage of lupus develop low or moderate fever, accompanied by obvious weakness, fatigue, drowsiness and weight loss. 2. Skin changes: representative zygomatic butterfly-shaped erythema, partly accompanied by painless ulceration of oral and nasal mucosa and alopecia, etc. 3. Muscle and joint pain: symmetrical joint swelling and pain in finger, wrist and knee joints, accompanied by muscle pain and muscle weakness. 4. Proteinuria: when lupus affects the kidneys, symptoms such as hematuria, proteinuria, edema, etc., which are manifested as tiny bubbles in the urine. 5. Shortness of breath: When lupus affects the cardiovascular system, cardiac function decreases and symptoms such as shortness of breath, panic and discomfort in the precordial area appear. 6. Mood disorders: after lupus involves the central and peripheral nervous system, symptoms such as confusion, mood disorders, cognitive impairment and anxiety appear. 7. Loss of appetite: abdominal pain, vomiting, diarrhea, loss of appetite and other symptoms after lupus affects the digestive system. There are many precursors of lupus erythematosus in women, and it is recommended that patients with suspected lupus erythematosus should consult the Rheumatology and Immunology Department in time to confirm the diagnosis and treatment after examination by professional physicians.