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Wheal
- Description
- Flat topped palpable lesions of variable size
- Dermal collections of edema fluid
- Precautions: Wheal persists beyond 72 hours
- Consider Urticarial Vasculitis and biopsy
- Examples
- Insect Bite
- Urticaria
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| Definition (NCI) | A smooth, slightly elevated area on the body surface, which is redder or paler than the surrounding skin. It is the typical lesion of urticaria, the dermal evidence of allergy, and in sensitive persons may be provoked by mechanical irritation of the skin. |
| Definition (NCI) | A smooth, slightly elevated area on the body surface, which is redder or paler than the surrounding skin. It is the typical lesion of urticaria, the dermal evidence of allergy, and in sensitive persons may be provoked by mechanical irritation of the skin. |
| Concepts | Sign or Symptom (T184)
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| English | Weal, Welt, Welts, Wheal, WHEALS |
| Spanish | habón, habon, roncha |
| Credits | Derived from the NIH UMLS (Unified Medical Language System)
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