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Urushiol causes an eczematous contact dermatitis characterized by redness, swelling, papules, vesicles, blisters, and streaking. [ 4 ] [ 5 ] People vary greatly in their sensitivity to urushiol. In approximately 15% [ 6 ] to 30% [ 7 ] of people, urushiol does not trigger an immune system response, while at least 25% of people have a very strong ...
There have been many different theories regarding the causes of excoriation disorder, including biological and environmental factors. [10]A common hypothesis is that excoriation disorder is often a coping mechanism to deal with elevated levels of turmoil, boredom, anxiety, or stress within the individual, and that the individual has an impaired stress response.
A man scratching his back: Specialty: Dermatology: Symptoms: Compulsion to scratch an irritated area of skin: Causes: Certain infections, allergies, blood derangements and environmental factors: Risk factors: Dry skin: Diagnostic method: Often based on the causes of itching: Differential diagnosis: Pain: Treatment: Antipruritics, phototherapy
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.
Treatment typically takes place in hospital such as in a burn unit or intensive care unit. [3] [7] Efforts include stopping the cause, pain medication, and antihistamines. [3] [4] Antibiotics, intravenous immunoglobulins, and corticosteroids may also be used. [3] [4] Treatments do not typically change the course of the underlying disease. [3]
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Also, because scratching or putting pressure on the referred itch does not cause the stimulus area to itch, the relationship between the stimulus and the referred itch is unidirectional. [2] The itching sensation is spontaneous and can cease with continued stimulation. There are two types of referred itch: normal and acquired (pathological).