Here is the classification of Lupus for you guys.
SYMPTOMS OF SLE
Arthralgia (Joint pain)
Aloopecia (hair Loss)
Mouth or Nose Ulcers
ACR CRITERIA FOR DIAGNOSING SLE
Serositis (pleuritis or pericarditis)
Renal Disorder (persistent Proteinuria in the urine or cellular casts)
Neurological disorder (seizures or psychosis)
Hematologic disorder (anemia, Leukopenia or lymphopenia on two or more occasions, thrombocytopenia
Immunologic disorder (positive LE cell preparation, abnormal anti-DNA or ANTI-Sm values, False postive VDRL (syphilis test)
Abnormal ANA Titre
"The american College of Rheumatology (ACR) an organization of doctors and associated health professionals who specialize in arthritis and related diseases of the bones, joints and muscles, has developed and refined a set of diagnostic criteria...if at least 4 of the 11 criteria develop at one time or individually over any period of observation, then the patient is likely to have SLE however, a diagnosis of SLE can be made in a patient having fewer than four of these symptoms."
Hope this helps