In addition to other physical urticarias listed on this site, the following may also co-exist with Cold Urticaria.
Infections Hive-like rashes
Non-allergic urticaria Mechanisms other than allergen-antibody interactions
Emotionally induced urticaria.
Dominantly inherited cutaneous and neurocutaneous porphyrias
Dietary histamine poisoning
Stress and chronic idiopathic urticaria
Cholinergic Urticaria Related to the Autnomic Nervous System
Link to external websites for further research: