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Peripheral cyanosis is the blue tint in fingers or extremities, due to an inadequate or obstructed circulation. [5] The blood reaching the extremities is not oxygen-rich and when viewed through the skin a combination of factors can lead to the appearance of a blue color .
The very term "acrocyanosis" is often applied inappropriately in cases when blue discoloration of the hands, feet, or parts of the face is noted. [1] The principal (primary) form of acrocyanosis is that of a benign cosmetic condition, [2] sometimes caused by a relatively benign neurohormonal disorder. [3]
A methemoglobin level > 1.5 g/dL causes cyanosis. The most common congenital cause is a deficiency in the enzyme cytochrome b5 reductase which reduces methemoglobin in the blood. [22] However, in infants the most common cause of methemoglobinemia is acquired through the ingestion of nitrates (NO − 3) through well water or foods.
Livedo reticularis is a common skin finding consisting of a mottled reticulated vascular pattern that appears as a lace-like purplish discoloration of the skin. [1] The discoloration is caused by reduction in blood flow through the arterioles that supply the cutaneous capillaries, resulting in deoxygenated blood showing as blue discoloration ().
The condition, which can be a disease, syndrome or phenomenon, causes blood vessels to narrow in response to cold or stress so that little or no blood flows to the affected body parts — most ...
Molly Smith experienced pins and needles in her hands and feet, which eventually led to the discovery of a cyst and a diagnosis of ovarian cancer. As a summer camp volunteer in 2022, Molly Smith ...
Gross clubbing – Thickening of the whole distal (end part of the) finger (resembling a drumstick) Hypertrophic osteoarthropathy – Shiny aspect and striation of the nail and skin Schamroth's sign or Schamroth's window test (originally demonstrated by South African cardiologist Leo Schamroth on himself) [ 16 ] is a popular test for clubbing.
Along with hypothyroidism, which impacts your body’s metabolism and can make you feel cold, Raynaud’s disease is another common cause of chilly hands. “This condition commonly occurs in ...