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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 ]
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 ]
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 ().
Both of these conditions cause cyanosis, or a bluish discoloration of skin or mucous membranes. [4] Normally, oxygenated blood appears red and deoxygenated blood has more of a blue appearance. [5] In babies with low levels of oxygen or mixing of oxygenated and deoxygenated blood, the blood can have a blue or purple color, causing cyanosis. [6]
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]
Pain, swelling, bluish discoloration Paroxysmal hand hematoma , also known as Achenbach syndrome , is a skin condition characterized by spontaneous focal hemorrhage into the palm or the volar surface of a finger, which results in transitory localized pain, followed by rapid swelling and localized blueish discoloration .
Blood vessel Dorsal venous network of hand The veins on the dorsum of the hand. (Dorsal venous network labeled at center right.) Details Drains from Hand Source Dorsal metacarpal veins Drains to Cephalic vein, basilic vein Identifiers Latin rete venosum dorsale manus TA98 A12.3.08.023 TA2 4967 FMA 67977 Anatomical terminology [edit on Wikidata] The dorsal venous network of the hand is a venous ...
An affected part turning white, then blue, then red, burning [2] Complications: skin sores, gangrene [2] Usual onset: 15–30 year old, typically females [3] [4] Duration: Up to several hours per episode [2] Risk factors: Cold, emotional stress [2] Diagnostic method: Based on the symptoms [3] Differential diagnosis: Causalgia, erythromelalgia ...