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Research draft

urticaria

vr.tr.urticaria · INF.KNW

Let an agent explain urticaria and its forms in general terms from clinical guidelines, describe causes, diagnosis and treatment approaches, distinguish urticaria from other rashes and from anaphylaxis, and route personal questions to clinicians and emergencies to urgent care.

Thing Registry Information and virtual systems

Research draft, second pass

A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.

written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify

Researched by: Claude

Purpose and description

Let an agent explain urticaria and its forms in general terms from clinical guidelines, describe causes, diagnosis and treatment approaches, distinguish urticaria from other rashes and from anaphylaxis, and route personal questions to clinicians and emergencies to urgent care.

A skin reaction of itchy raised wheals, commonly called hives, caused by release of histamine from mast cells, occurring as acute urticaria lasting under six weeks, often from infection, food or drugs, or chronic urticaria lasting longer, including spontaneous or idiopathic forms and inducible forms such as cold, contact and aquagenic urticaria, and often accompanied by angioedema, deeper swelling of the skin or mucosa; urticaria is treated with antihistamines and, in severe cases, biologics, and can signal anaphylaxis.

What it is for: Not applicable; a skin condition.

It can be explain forms and causes; relay diagnosis and treatment approaches; distinguish from other rashes; route personal questions.

Distinguishing features

Transient wheals

Histamine mediated

Acute and chronic forms

Angioedema association

What it looks like

Raised red or skin-coloured itchy wheals that come and go within hours.

Physical character

lifetime prevalence: about 20 percent - estimates

chronic urticaria prevalence: about 1 percent

How it is recognised

Hives with transient wheals

Acute, chronic spontaneous, inducible forms, angioedema

Eczema and contact dermatitis persist longer; anaphylaxis involves breathing and circulation

Related models

is a kind of - in registry terms

skin disease

is a kind of - in registry terms

skin and integumentary tissue symptom

is mediated by - from mast cells

histamine

is treated with - as first line

antihistamine

In practice

Families and kinds

acute urticaria

chronic spontaneous or idiopathic urticaria

inducible urticaria: cold, heat, pressure, solar, aquagenic, cholinergic

contact urticaria

angioedema with or without wheals

urticarial vasculitis as a distinct condition

Identifiers

ICD-11 EB00 urticaria

MeSH D014581

Standards and regulation

International urticaria guidelines from EAACI, GA2LEN and WAO

Drug regulation for antihistamines and biologics

Failure modes and hazards

Anaphylaxis missed

Agents giving personal medical advice

Unnecessary allergy testing

Confusing with other rashes

Also called

angioedemaaquagenic urticariaidiopathic urticariacold urticariachronic urticariacontact urticariaadrenergic urticariadrug-induced urticariagalvanic urticariaautoimmune urticariawhite dermographismphysical urticariasolar urticariaDrug-induced angioedemanon-histaminic angioedemaacquired angioedemahereditary angioedemaGleich's syndromechronic inducible urticariavibratory urticariaHeat urticariapressure urticariaC1 inhibitor deficiencyhereditary angioedema type IIIhereditary angioedema Types I and IILocalized heat contact urticaria

Where this came from

wikidata · CC0 1.0

Source repository Registry entry point

Drafted structure

Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.

Help Getting help first.

Safety.

Emergency

Emergency signs.

Emergency

Emergency.

  1. What signs such as swelling of the throat or breathing difficulty indicate anaphylaxis and need emergency care? action
  2. Is the user describing such signs, which need emergency services now? boundary

Care

When to see a clinician.

Care

Care.

  1. When should hives be assessed by a clinician, per guidelines? provenance
  2. Is the user asking about their own rash, which needs a clinician? boundary
Understand The condition.

Clinical.

Forms

Forms and causes.

Forms

Forms.

  1. What forms of urticaria exist, and what causes them? definition
  2. Is the rash urticaria, eczema, contact dermatitis or another condition? boundary

Mechanism

Mechanism.

Mechanism

Mechanism.

  1. How do mast cells and histamine produce wheals and angioedema? provenance
  2. Which entry fits the specific form? action
Treat Diagnosis and treatment.

Clinical.

Diagnosis

Diagnosis.

Diagnosis

Diagnosis.

  1. How is urticaria diagnosed, and what tests are and are not useful, per guidelines? provenance
  2. Which references are standard? provenance

Treatment

Treatment.

Treatment

Treatment.

  1. What treatments do guidelines recommend, from antihistamines to biologics, in general terms? provenance
  2. Which sources are cited? provenance
Context Living and research.

Context.

Living

Living with chronic urticaria.

Living

Living.

  1. How do people manage chronic urticaria and its impact on quality of life? provenance
  2. Which entry fits chronic urticaria support? action

Research

Research.

Research

Research.

  1. What research exists on autoimmune mechanisms and new treatments, with findings attributed? provenance
  2. Which entry fits allergy research? action

What the second pass must settle

  • Should chronic spontaneous urticaria and angioedema be separate entries?
  • How should guidelines be linked?
  • The registry entry has merged aliases naming forms; should they be split off?
Draft as JSON