“…A correct diagnosis is very important, since SLDs are very different diseases in terms of pathogenesis, clinical course, treatment, and outcome. 1 SLD is quite extensive, including other immune-mediated diseases (eosinophilic fasciitis, graft-versus-host disease), deposition disorders (CREST [calcinosis, Raynaud phenomenon, esophageal dysmotility, sclerodactyly, and telangiectasia] syndrome, scleromyxedema, scleredema, nephrogenic systemic fibrosis/nephrogenic fibrosing der- mopathy, systemic amyloidosis), toxic exposures including occupational and iatrogenic (aniline-denaturated rapeseed oil, L-tryptophan, polyvinyl chloride, bleomycin, carbidopa), and genetic syndromes (progeroid disorders, stiff skin syndrome). 2 Histological examination does not always allow the differentiation among the various subtypes of scleroderma and SLD, and therefore, the diagnosis is often based on the pattern of cutaneous involvement and other clinical features.…”