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Raynaud syndrome, also known as Raynaud's phenomenon, is a medical condition in which the spasm of small arteries causes episodes of reduced blood flow to end arterioles. [1] Typically the fingers, and, less commonly, the toes, are involved. [1] Rarely, the nose, ears, nipples, or lips are affected. [1]
Raynaud’s phenomenon, which causes parts of the body like the fingers and the toes to go cold and numb, likely stems from two genes, a study published Thursday in the journal Nature ...
The early clinical features of MCTD are nonspecific and may include fatigue, low-grade fever, myalgias, Raynaud phenomenon, swelling of the fingers or hands, arthralgia, esophageal reflux or dysmotility, acrosclerosis (also known as sclerodactyly), mild myositis, and various forms of pulmonary involvement.
CREST syndrome, also known as the limited cutaneous form of systemic sclerosis (lcSSc), is a multisystem connective tissue disorder.The acronym "CREST" refers to the five main features: calcinosis, Raynaud's phenomenon, esophageal dysmotility, sclerodactyly, and telangiectasia.
Most patients (over 80%) have vascular symptoms and Raynaud's phenomenon, which leads to attacks of discoloration of the hands and feet in response to cold. Raynaud's normally affects the fingers and toes. Systemic scleroderma and Raynaud's can cause painful ulcers on the fingers or toes, which are known as digital ulcers.
Furthermore, reactive hyperemia is frequently associated with Raynaud's phenomenon. In this scenario, vasospasm within the blood vessels leads to ischemia, which can cause tissue necrosis. Subsequently, there is an increased blood flow to the affected area, aimed at eliminating waste products and clearing cellular debris.
There are also a number of other conditions that affect hands, feet, and parts of the face with associated skin color changes that need to be differentiated from acrocyanosis: Raynaud phenomenon, pernio, acrorygosis, erythromelalgia, and blue finger syndrome. The diagnosis may be challenging in some cases, especially when these syndromes co-exist.
Blanching of the fingers is also one of the most clinically evident signs of Raynaud's phenomenon. [1] Blanching is prevented in gangrene as the red blood corpuscles are extravasated and impart red color to the gangrenous part.