Urticaria

{
  "id": "MLC-T-ENV-029324",
  "term": "Urticaria",
  "field": "Environment",
  "definition": "A vascular reaction of the skin marked by the transient appearance of smooth, slightly elevated patches (wheals) which are redder or paler than the surrounding skin and often attended by severe itching",
  "subject": "Chemicals, toxics and pesticides",
  "references": [
    "Chemical Emergency Preparedness and Prevention Glossary"
  ],
  "url": "https://mlchart.com/terminology/environment/urticaria/"
}