Lupus Erythematosus, SystemicPanniculitis, PeritonealHistiocytosisArthritis, RheumatoidLupus Erythematosus, DiscoidArthritisLupus Erythematosus, CutaneousLupus NephritisErythema NodosumErythema InduratumAntibodies, AntinuclearPanniculitis, Lupus ErythematosusPancreatitis, AlcoholicAutoantibodiesArthritis, ExperimentalHistiocytesArthritis, InfectiousLupus Vasculitis, Central Nervous SystemCytophagocytosisPrednisoloneArthritis, JuvenileErythemaSkin DiseasesGnathostomiasisImmunosuppressive AgentsArthritis, PsoriaticAutoimmune DiseasesHydroxychloroquineAntibodies, AnticardiolipinImmunoglobulin GPanniculitis, Nodular NonsuppurativeMice, Inbred NZBAutoantigensPanniculitisDermatomyositisAntibodies, AntiphospholipidAntiphospholipid SyndromeArthritis, ReactiveBiopsyRheumatic DiseasesMice, Inbred MRL lprComplement C4Severity of Illness IndexAntigen-Antibody ComplexRemission, SpontaneousLupus Coagulation InhibitorSkinFatal OutcomeLymphoma, T-Cell, CutaneousAutoimmunitysnRNP Core ProteinsPancreatitis, Acute NecrotizingSjogren's SyndromeComplement C1qB-LymphocytesImmunoglobulin MNephritisEnzyme-Linked Immunosorbent AssayPhotosensitivity DisordersComplement C3Case-Control StudiesGenetic Predisposition to DiseaseRheumatoid FactorConnective Tissue DiseasesRNA, Small CytoplasmicSyndromeDNASynovial MembraneJointsB-Cell Activating FactorSynovial FluidCollagen Diseasesalpha 1-AntitrypsinCyclosporineCardiolipinsBiological MarkersT-LymphocytesMixed Connective Tissue DiseaseSerositisComplement C4aScleroderma, SystemicTomography, X-Ray ComputedBlood SedimentationAntibodies, MonoclonalLupus VulgarisVasculitisAntibody SpecificityGlomerulonephritisComplement System ProteinsRibonucleoproteinsRibonucleoproteins, Small Nuclearbeta 2-Glycoprotein ICryoglobulinsDisease Models, AnimalReceptors, IgGAdrenal Cortex HormonesAntibodiesGlucocorticoidsLymphocyte ActivationArthritis, Gouty