Original MICA image-reading exercise, unscored. No clinical narrative absent from the source is added.
- Describe visible findings before proposing an interpretation.
- Suggest an interpretation and at least one image limitation.
- Which clinical findings or investigations would complement this observation?
Reveal the explained reading
Urticaria
- Lesion
- Oedematous wheal
- Symptom
- Common itching
- Individual duration
- Usually <24 h
- Association
- Possible angioedema
Morphological description
Wheals change shape and location; pale centres and red surrounding flares may be subtle.
Causes and diagnostic direction
Urticaria may be spontaneous or inducible; overall persistence beyond six weeks defines chronic disease.
Differential diagnoses
Wheals lasting over twenty-four hours, pain or residual bruising suggest urticarial vasculitis.
Pitfalls and limitations
A photograph cannot show transience; absent itching alone does not establish vasculitis.
Take-home message
Individual lesion duration and residual skin changes distinguish typical urticaria from atypical urticarial eruptions.
Sources
Documentary review: 2026-10-12
Media source & rights
- Author
- Psixtras
- Original source
- Psixtras — Hives urticaria.jpg — CC0 1.0 — https://commons.wikimedia.org/wiki/File%3AHives_urticaria.jpg
- Licence
- CC0 1.0
- Changes
- Image source/aperçu éditeur converti WebP ; dimensions proportionnelles, aucun recadrage ni retouche médicale, EXIF supprimé. SHA source = octets réellement acquis, pas un original refusé. Dérivé écran proportionnel ≤1280 px, WebP qualité76 ; vignette ≤320 px qualité72. Source acquise et dérivé initial conservés sans modification ; aucune retouche médicale, aucun recadrage.
- Dimensions
- 500 × 667 px
- Check
- 2026-10-11