31. However, nifedipine has never been approved by the FDA for treatment of urticaria pigmentosa. 32. Also, there have been a few unorthodox ( unusual ) causes of solar urticaria . 33. This is different from the normal redness that can be seen in people without cold urticaria . 34. There is usually no associated itch or urticaria , as it is not an allergic response. 35. :I don't think anyone knows for certain if dermatographic urticaria is genetically inherited. 36. Patients with cold urticaria need to learn to protect themselves from a hasty drop in body temperature. 37. Patients who experience urticaria with angioedema require emergency treatment as this is a life-threatening condition. 38. Treatment guidelines for the management of chronic urticaria have been published by professional allergy and dermatology groups. 39. Allergic-type reactions, including urticaria , pruritic skin rashes, and fever, may occur. 40. The pathogenesis of aquagenic urticaria is not fully known; however, several mechanisms have been proposed.
