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Prurigo pigmentosa is a rare skin condition of unknown cause, characterized by the sudden onset of erythematous papules that leave a reticulated hyperpigmentation when they heal. [ 1 ] : 57 The condition has been associated with a strict ketogenic diet in case reports in the medical literature.
Uremic pruritus is caused by chronic kidney failure and is the most common internal systemic cause of itching. [2]: 52–3 Nalfurafine, an orally administered, centrally acting κ-opioid receptor agonist, is approved to treat the condition in Japan. [3]
Irritant dermatitis is usually found on hands whereas exposed areas of skin. Symptoms of both forms include the following: Red rash: This is the usual reaction. The rash appears immediately in irritant contact dermatitis; in allergic contact dermatitis, the rash sometimes does not appear until 24–72 hours after exposure to the allergen.
Dermatitis herpetiformis symptoms include itching, stinging and a burning sensation. Papules and vesicles are commonly present. [ 21 ] The small red bumps experienced in this type of dermatitis are usually about 1 cm in size, red in color and may be found symmetrically grouped or distributed on the upper or lower back, buttocks , elbows , knees ...
The diagnosis is frequently made by treating the initial triggering skin problem and observing the improvement in the eczematous rash. Both the initial skin problem and the id reaction must be observed to make the diagnosis. [5] [6] Not all dyshidrotic rashes are id reactions, but id reactions are often dyshidrotic-like. [2]
Oatmeal baths may relieve itching. An antihistamine may help relieve itching. (NOTE: Drowsiness may occur.) In severe cases or if the rash is on the face or genitals, seek professional medical ...
Ice, cold water, cooling lotions, and cold air do not help cure poison ivy rashes, but cooling can reduce inflammation and soothe the itch. Results for jewelweed as a natural agent for treatment are conflicting. Some studies indicate that it "failed to decrease symptoms of poison ivy dermatitis" [1980] and had "no prophylactic effect" [1997]. [20]
Masaharu Nagashima (長島 正治, Nagashima Masaharu, February 1929 – May 2010) was a Japanese dermatologist, the first professor of dermatology at Kyorin University, who proposed the designation of prurigo pigmentosa. He was born in Tokyo in February 1929.