| 1. | Urticaria | | | Description and causes of acute, chronic and physical urticarias. www.aad.org |
| 4. | Hives (Urticaria) | | | Information on causes and treatments of different kinds of urticaria. www.users.globalnet.co.uk |
| 5. | Types of Urticaria | | | Discussion of cholinergic urticaria, angioedema, dermographism and pressure urticaria. www.docmed.com |
| 8. | Causes of Urticaria | | | Urticaria information, causes, FAQs, research, new measures, treatment plans on-line. www.urticaria.com |
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