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Keraunography or keranography is the belief that lightning, when striking an object (generally a human body), can leave markings which constitute a photographic image of surrounding objects. It is generally considered a myth: lightning can leave markings, but they are not photographic.
Dermatographic urticaria is sometimes called "skin writing", as it is possible to mark deliberate patterns onto the skin. The condition manifests as an allergic-like reaction, causing a warm red wheal to appear on the skin. As it is often the result of scratches, involving contact with other materials, it can be confused with an allergic ...
Lichtenberg figures are fern-like patterns that may appear on the skin of lightning strike victims and typically disappear in 24 hours. [10] They are also known as Keraunographic markings. [11] A lightning strike can also create a large Lichtenberg figure in grass surrounding the point struck.
Skin marking may refer to: Scarifying, scratching, etching, burning / branding, or cutting designs, pictures, or words into the skin as a permanent body modification. Hyperkeratosis, a skin condition; Cutaneous condition, any of various skin conditions; Mole (skin marking), a benign tumor on human skin, usually with darker pigment; Tattoo; Body art
stroking dorsal radial skin, with forearm in supination, elicits wrist and finger flexion Bekhterev–Mendel reflex: Vladimir Bekhterev, Kurt Mendel: neurology: pyramidal tract lesions: toe flexion on percussion of dorsum of foot Bence Jones protein: Henry Bence Jones: hematology: multiple myeloma: Benedict solution: Stanley Rossiter Benedict ...
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]
The skin weighs an average of four kilograms, covers an area of two square metres, and is made of three distinct layers: the epidermis, dermis, and subcutaneous tissue. [1] The two main types of human skin are: glabrous skin, the hairless skin on the palms and soles (also referred to as the "palmoplantar" surfaces), and hair-bearing skin. [3]
Formication is the sensation resembling that of small insects crawling on (or under) the skin, in the absence of actual insects. It is one specific form of a set of sensations known as paresthesias, which also include the more common prickling, tingling sensation known as pins and needles. Formication is a well-documented symptom which has ...