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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]
The skin response resembles an exaggerated sunburn. The involved chemical may enter into the skin by topical administration, or it may reach the skin via systemic circulation following ingestion or parenteral administration. The chemical needs to be "photoactive," which means that when it absorbs light, the absorbed energy produces molecular ...
Cutaneous dysesthesia is characterized by discomfort or pain from touch to the skin by normal stimuli, including clothing. The unpleasantness can range from a mild tingling to blunt, incapacitating pain. [citation needed] Scalp dysesthesia is characterized by pain or burning sensations on or under the surface of the cranial skin. Scalp ...
We talk to skin care experts about skin redness, finding out the various causes and what we can do to alleviate it. Plus, products to shop.
Photosensitivity is the amount to which an object reacts upon receiving photons, especially visible light.In medicine, the term is principally used for abnormal reactions of the skin, and two types are distinguished, photoallergy and phototoxicity.
Red skin may refer to: Flushing (physiology), to temporarily become markedly red in the face or other areas of the skin; Erythroderma, an inflammatory disease of the skin that causes a red appearance along with scaling; Erythema, a symptom describing redness of skin or mucous membranes caused by increased blood flow in the superficial capillaries
The triple response is caused by firm stroking of the skin with a pointed object. [5] but some time at caused by capillary vasodilation. [citation needed] The triple response of Lewis is particularly sensitive in people with dermatographia urticaria. [4] [5] Some form of dermatographia is present in around 5% of the population. [4]
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