CREST syndrome

CREST syndrome is a condition that affects the body's connective tissues, which provide support and structure to organs and skin. It primarily involves the skin, blood vessels, and internal organs, leading to symptoms like skin thickening, calcium deposits, and problems with blood flow. People with this syndrome often experience Raynaud's phenomenon, where fingers and toes change color and feel numb in response to cold or stress. The condition can also cause difficulty swallowing due to esophageal problems and joint pain. Overall, CREST syndrome impacts the body's ability to maintain normal tissue function and blood circulation.

CREST syndrome is a limited form of systemic sclerosis characterized by calcinosis, Raynaud's phenomenon, esophageal dysmotility, sclerodactyly, and telangiectasia. It results from autoimmune-mediated fibrosis and vascular dysfunction affecting the skin and internal organs. The underlying mechanism involves autoantibody production, particularly anti-centromere antibodies, leading to collagen deposition and microvascular damage. This syndrome is clinically significant due to its chronic course and potential complications such as pulmonary hypertension and digital ulcers. It represents a subset of systemic sclerosis with a relatively better prognosis but requires monitoring for systemic involvement.