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Erythema toxicum neonatorum is a common, non-threatening rash in newborns. [ 1 ] [ 2 ] It appears in 40-70% of newborns within the first week of life, and it typically improves within 1–2 weeks. [ 2 ] [ 3 ] [ 4 ] It only occurs during the newborn period, but may appear slightly later in premature babies.
This illness is a tick-borne disease carried by the lone star tick Amblyomma americanum.This tick was first proposed as a possible vector of disease in 1984, [2] and the illnesses associated with the tick called "Lyme-like disease", [3] but it was not recognized to be distinct from Lyme disease until the late 1990s.
Lyme disease, also known as Lyme borreliosis, is a tick-borne disease caused by species of Borrelia bacteria, transmitted by blood-feeding ticks in the genus Ixodes. [4] [9] [10] The most common sign of infection is an expanding red rash, known as erythema migrans (EM), which appears at the site of the tick bite about a week afterwards. [1]
First-line treatment: H1RAs are first-line therapy for patients with CholU, but many patients show only a mild to moderate response to standard H1RA doses. The addition of an H2RA was reported to be effective in patients with refractory CholU that was unresponsive to up-dosing of an H1RA.
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 .
Erythema migrans / Lyme disease: Expands over days or weeks to 5–70 cm (median 16 cm), circular or oval, red or bluish, may have an elevated or darker center, may have a central or ring-like clearing, may feel warm, not painful or itchy [4] [5] Armpit, groin, back of knee, on the trunk, under clothing straps, or in children's hair, ear, or ...
Solar urticaria is an immunoglobulin E-mediated hypersensitivity that can be introduced through primary or secondary factors, or induced by exogenous photosensitization. [15] [16] Primary SU is believed to be a type I hypersensitivity (a mild to severe reaction to an antigen including anaphylaxis) in which an antigen, or substance provoking an immune response, is "induced by UV or visible ...
Hives, also known as urticaria, is a kind of skin rash with red and/or flesh-colored, raised, itchy bumps. [1] Hives may burn or sting. [2] The patches of rash may appear on different body parts, [2] with variable duration from minutes to days, and do not leave any long-lasting skin change. [2]