**4. Conclusion**

Ordinary urticaria is a clinical picture frequently encountered by dermatologists and usu‐ ally presents no diagnostic difficulty. However, cutaneous and systemic urticarial syndromes should be considered in the case of persistence of urticarial lesions, bilateral and symmetri‐ cal location, healing with hyperpigmentation or bruising, the presence of other elementary lesions, not responding to systemic antihistamines, and being accompanied by systemic find‐ ings. The differential diagnosis of ordinary urticaria and urticarial syndromes is not easy. A detailed clinical evaluation should therefore be performed. Clinicopathologic correlation and, if necessary, further studies should be conducted in the presence of findings suggesting urticarial syndromes.
