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  2. Cyanosis - Wikipedia

    en.wikipedia.org/wiki/Cyanosis

    Cyanosis is the change of body tissue color to a bluish-purple hue, as a result of decrease in the amount of oxygen bound to the hemoglobin in the red blood cells of the capillary bed. [1] Cyanosis is apparent usually in the body tissues covered with thin skin , including the mucous membranes , lips, nail beds , and ear lobes. [ 1 ]

  3. Acrocyanosis - Wikipedia

    en.wikipedia.org/wiki/Acrocyanosis

    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.

  4. Livor mortis - Wikipedia

    en.wikipedia.org/wiki/Livor_mortis

    Livor mortis (from Latin līvor 'bluish color, bruise' and mortis 'of death'), postmortem lividity (from Latin post mortem 'after death' and lividitas 'black and blueness'), hypostasis (from Greek ὑπό (hypo) 'under, beneath' and στάσις (stasis) 'a standing') [1] [2] or suggillation, is the second stage of death and one of the signs of ...

  5. Livedo reticularis - Wikipedia

    en.wikipedia.org/wiki/Livedo_reticularis

    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 ().

  6. Human blood in veins is not actually blue. Blood is red due to the presence of hemoglobin; deoxygenated blood (in veins) has a deep red color, and oxygenated blood (in arteries) has a light cherry-red color. Veins below the skin can appear blue or green due to subsurface scattering of light through the skin, and aspects of human color ...

  7. Cold hands are common in winter. When are they a sign of a ...

    www.aol.com/lifestyle/cold-hands-common-winter...

    “The cold, blanching, bluish discoloration, numbness and tingling reverses within 15 minutes on warming the body or eliminating the stressor.” ... The most effective ways to warm up cold hands.

  8. Vascular anomaly - Wikipedia

    en.wikipedia.org/wiki/Vascular_anomaly

    Venous malformation is a bluish lesion compressible on palpation; the masses enlarge with physical activity or if in a dependent position. The bluish lesion is caused by dilated venous vessels. Venous malformations can be painful in the morning due to stasis and microthrombi within the veins.

  9. Mongolian spot - Wikipedia

    en.wikipedia.org/wiki/Mongolian_spot

    Mongolian spot is a congenital developmental condition—that is, one existing from birth—exclusively involving the skin.The blue colour is caused by melanocytes, melanin-containing cells, that are usually located in the surface of the skin (the epidermis), but are in the deeper region (the dermis) in the location of the spot. [6]