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Scleroderma, also known as systemic sclerosis, is a chronic autoimmune connective tissue disorder characterized by excessive collagen deposition leading to skin thickening and internal organ fibrosis. The condition affects multiple organ systems including the skin, blood vessels, lungs, kidneys, and gastrointestinal tract, with varying degrees of severity and progression.
The disease involves three key pathological processes: vasculopathy with endothelial dysfunction and microangiopathy, immune system activation with autoantibody production, and excessive collagen synthesis leading to tissue fibrosis. Triggers such as viral infections or environmental factors may initiate the autoimmune cascade in genetically susceptible individuals, resulting in progressive tissue remodeling and organ dysfunction.
Diagnosis relies on clinical presentation of skin thickening, Raynaud's phenomenon, and organ-specific manifestations, supported by characteristic autoantibodies (anti-centromere, anti-Scl-70, anti-RNA polymerase III) and capillaroscopy findings. Early recognition is crucial as prompt treatment with immunosuppressive agents and organ-specific therapies can slow disease progression and prevent life-threatening complications such as pulmonary hypertension, renal crisis, or interstitial lung disease.