What is the main cause of urticaria?

Related questions

1. What does chronic urticaria look like?
2. Does urticaria go away?
3. What is the cure for urticaria?
4. Can urticaria be treated?
5. How long does urticaria last?
6. Why does urticaria happen?
7. Will cold urticaria go away?
8. Is turmeric good for hives?
9. Can cold urticaria kill you?
10. What is the best treatment for chronic urticaria?

Tags

1. #impossible
2. #sunlight
3. #medications
4. #allergic
5. #lasting
6. #there
7. #certain
8. #exposure
9. #several
10. #chemicals
11. #reactions
12. #histamine
13. #stings
14. #cause
15. #hives
16. #often
17. #acute
18. #weeks
19. #including
20. #insect
21. #urticaria
22. #release
23. #types
24. #foods
25. #exactly
26. #different
27. #formed