URTICARIA (HIVES)

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7 Terms

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Allergy (Food/drug/plant/etc)

Type I hypersensitivity

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trunk

Usually on the _____ and extremities.

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transient

Individual lesions are ______, usually resolved in 24 hr, but the entire episode may last for days.

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24 hr

Individual lesions are transient, usually resolved in _____, but the entire episode may last for days.

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20 – 40y

All ages, more in

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lymphocytes, neutrophils or eosinophils.

Type-1-Hypersensitivity Reactions.

- Perivascular inflammatory infiltrate: ___________

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Histamine

Antigen is Re-Exposed to a sensitized Mast-Cell/Basophil IgE-Bound Mast Cell Degranulates: Releasing Inflammatory Mediators (_______) of Type-1-Hypersensitivity Reactions.