DermatomyositisPolymyositisSyndromeMyositisParaneoplastic SyndromesLung Diseases, InterstitialMediastinal EmphysemaPanniculitisMuscle WeaknessHistidine-tRNA LigaseAutoantibodiesDown SyndromePrednisoloneMetabolic Syndrome XLupus Erythematosus, CutaneousMuscle, SkeletalRheumatic DiseasesMyositis, Inclusion BodySjogren's SyndromeImmunoglobulins, IntravenousImmunosuppressive AgentsBiopsyConnective Tissue DiseasesSkinTelangiectasisMicroscopic AngioscopyCreatine Kinase