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A petechia (/ p ɪ ˈ t iː k i ə /; [1] pl.: petechiae) is a small red or purple spot (≤4 mm in diameter) that can appear on the skin, conjunctiva, retina, and mucous membranes which is caused by haemorrhage of capillaries.
The lingual veins are multiple veins of the tongue with two distinct courses: one group drains into the lingual artery; another group drains either into the lingual artery, (common) facial vein, or internal jugular vein. [1]
Caviar tongue is a condition characterized by the purplish nodular swelling of veins found on the undersurface of the tongue. [1]It is normal for there to be veins visible underneath the tongue, partly because the mucous membrane is so thin and translucent in this region, but where these vessels become dilated and tortuous, they may appear round and black like caviar. [2]
But to first make clear what a bruise is: It’s the result of a broken blood vessel (a.k.a. capillary) which causes a leakage and collection of blood under the skin’s surface, explains Riza ...
A hematoma, also spelled haematoma, or blood suffusion is a localized bleeding outside of blood vessels, due to either disease or trauma including injury or surgery [1] and may involve blood continuing to seep from broken capillaries.
Bruise colors vary from red, blue, or almost black, depending on the severity of broken capillaries or blood vessels within the bruise site. Broken venules or arterioles often result in a deep blue or dark red bruise, respectively. Darker colored bruises may result from a more severe bleeding from both blood vessels.
Emergency Department records show Winona was initially diagnosed with a “small bruise noted to right side of forehead” and “slight petechiae (teeny blood spots) under the eyes.”
Angina bullosa haemorrhagica is a condition of the mucous membranes characterized by the sudden appearance of one or more blood blisters within the oral cavity. [1]: 808 The lesions, which may be caused by mild trauma to the mouth tissues such as hot foods, typically rupture quickly and heal without scarring or further discomfort. [2]