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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]
Dermatosis papulosa nigra (DPN) is a condition of many small, benign skin lesions on the face, a condition generally presenting on dark-skinned individuals. [1]: 638–9 DPN is extremely common, affecting up to 30% of Black people in the US. [2] From a histological perspective, DPN resembles seborrheic keratoses. [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 ().
Other symptoms to note: Acne is the most common skin condition affecting Americans, Dr. Zeichner says, so you likely have experience with pimples already. The causes vary, but are often rooted in ...
Red, blotchy rash, with "target like" hives or sores. Anywhere Measles: Red rash that is raised with a fever or sore throat. Usually starts first on the forehead and face and spreads downward. Chickenpox: Multiple blisters with a fever, cough, aches, tiredness and sore throat. Usually starts first on the face, chest and back and spreads ...
Jeff Karp had just undergone his first full-body routine skin cancer check in the spring of 2022 and was about to walk out of the exam room, when, on a whim, the 47-year-old decided to ask his ...
Bruise caused by colliding with a handrail, typical of extreme sports such as skateboarding and rollerblading. Bruise caused by a sprained ankle Black eye and subconjunctival hemorrhage after a punch to the face. Bruise shapes may correspond directly to the instrument of injury or be modified by additional factors.
Erythema ab igne (Latin for 'redness from fire') EAI, also known as hot water bottle rash, [2] is a skin condition caused by long-term exposure to heat (infrared radiation). [3] Prolonged thermal radiation exposure to the skin can lead to the development of reticulated erythema, hyperpigmentation, scaling, and telangiectasias in the