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Erythroderma is an inflammatory skin disease with redness and scaling that affects nearly the entire cutaneous surface. [1] [2] This term applies when 90% or more of the skin is affected. In ICD-10, a distinction is made between "exfoliative dermatitis" at L26, and "erythroderma" at L53.9.
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]
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]
Perioral dermatitis presents as a bumpy, red rash around the mouth, nose, or eyes. "The rash can burn, sting, or be itchy, and often occurs after a trigger, such as cold weather, use of topical ...
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]
Perioral dermatitis, also known as periorificial dermatitis, is a common type of inflammatory skin rash. [2] Symptoms include multiple small (1–2 mm) bumps and blisters sometimes with background redness and scale, localized to the skin around the mouth and nostrils. Less commonly, the eyes and genitalia may be involved. [3]
This rash was known as erythema chronicum migrans, the skin rash found in early-stage Lyme disease. [ 18 ] In the 1920s, French physicians Garin and Bujadoux described a patient with meningoencephalitis, painful sensory radiculitis, and erythema migrans following a tick bite, and they postulated the symptoms were due to a spirochetal infection.
Erythematotelangiectatic rosacea exhibits permanent redness (erythema) with a tendency to flush and blush easily. [13] Also small, widened blood vessels visible near the surface of the skin (telangiectasias) and possibly intense burning, stinging, and itching are common. [13] People with this type often have sensitive skin.