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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. [2] [3] The word is derived from Italian petecchia 'freckle', of obscure origin. [1]
Bier spots are small, light macules usually found on the arms and legs of young adults, in which the intervening skin may seem erythematous but blanches with pressure so that these light macules disappear. [1]: 863 This is a benign physiologic vascular anomaly of no significance clinically. [1]: 863 [2]: 819–20
Blisters in particular can cause a feeling of desire to pull or bite off the affected skin and nails (since the skin is dead, thus easily pulled off), which could be detrimental, causing infection. Another disorder, known as excoriation disorder , the repetitive action of uncontrollably picking at one's skin, can sometimes accompany dermatophagia.
Purpura (/ ˈ p ɜːr p jʊər ə / [1]) is a condition of red or purple discolored spots on the skin that do not blanch on applying pressure. The spots are caused by bleeding underneath the skin secondary to platelet disorders, vascular disorders, coagulation disorders, or other causes. [2]
A skin disease that causes the hands and feet of the body to turn a sickly green color. This can usually only be cured by a series of painful injections. A rumored alternate cure is to soak the hands and feet in buckets of a substance called zypholic acid, which can be found in lizard urine. The hands and feet must be soaked for no less than 45 ...
Purpura fulminans is an acute, often fatal, thrombotic disorder which manifests as blood spots, bruising and discolouration of the skin resulting from coagulation in small blood vessels within the skin and rapidly leads to skin necrosis and disseminated intravascular coagulation. [2] [3]
Officials are warning of “bleeding eyes” virus, a.k.a. Marburg virus, after deaths in Rwanda. Here doctors share symptoms, treatments, and prevention.
Carotenosis is a benign and reversible medical condition where an excess of dietary carotenoids results in orange discoloration of the outermost skin layer.The discoloration is most easily observed in light-skinned people and may be mistaken for jaundice.