Table 1. Differentiation between urticaria and urticarial vasculitis*.
Urticaria | Urticarial vasculitis | |
Pain | – | + |
Itching | + | + |
Duration | <3 hours | >24 hours |
Resolution | Complete | Hyperpigmentation |
Diascopy | – | Central red spot |
Angioedema | – | Possible |
* modified from (2)