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  2. Erythema ab igne - Wikipedia

    en.wikipedia.org/wiki/Erythema_ab_igne

    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 affected ...

  3. Livedo reticularis - Wikipedia

    en.wikipedia.org/wiki/Livedo_reticularis

    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 ().

  4. Erythema - Wikipedia

    en.wikipedia.org/wiki/Erythema

    Erythema (Ancient Greek: ἐρύθημα, from Greek erythros 'red') is redness of the skin or mucous membranes, caused by hyperemia (increased blood flow) in superficial capillaries. [1] It occurs with any skin injury, infection, or inflammation. Examples of erythema not associated with pathology include nervous blushes. [2]

  5. Erythema nodosum - Wikipedia

    en.wikipedia.org/wiki/Erythema_nodosum

    Erythema nodosum (EN) is an inflammatory condition characterized by inflammation of subcutaneous fat tissue, resulting in painful red/blue lumps or nodules that are usually seen symmetrically on both shins, on the thighs, arms, and elsewhere. [1] It can be caused by a variety of conditions but 20 to 50% of cases are idiopathic.

  6. Purpura - Wikipedia

    en.wikipedia.org/wiki/Purpura

    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]

  7. Erysipelas - Wikipedia

    en.wikipedia.org/wiki/Erysipelas

    Erysipelas (/ ˌ ɛ r ə ˈ s ɪ p ə l ə s /) is a relatively common bacterial infection of the superficial layer of the skin (upper dermis), extending to the superficial lymphatic vessels within the skin, characterized by a raised, well-defined, tender, bright red rash, typically on the face or legs, but which can occur anywhere on the skin.

  8. Erythema marginatum - Wikipedia

    en.wikipedia.org/wiki/Erythema_marginatum

    Erythema marginatum (also known as chicken wire erythema) [1] is an acquired skin condition which primarily affects the arms, trunk, and legs. [2] It is a type of erythema (redness of the skin or mucous membranes) characterised by bright pink or red circular lesions which have sharply-defined borders and faint central clearing.

  9. Tinea cruris - Wikipedia

    en.wikipedia.org/wiki/Tinea_cruris

    Typically, over the upper inner thighs, there is an intensely itchy red raised rash with a scaly well-defined curved border. [3] [4] It is often associated with athlete's foot and fungal nail infections, excessive sweating, and sharing of infected towels or sports clothing. [4] [5] [6] It is uncommon in children. [4]