![]() ![]() Histamine is released for many reasons, including: Urticaria occurs when a trigger causes high levels of histamine and other chemical messengers to be released in the skin. This extra fluid in the tissues causes swelling and itchiness. You should also contact your GP if your symptoms are: If you have urticaria, without the symptoms of anaphylaxis, visit your GP if your symptoms don't go away within 48 hours. If you have symptoms of anaphylaxis this is a medical emergency.Ĭall 999 immediately and ask for an ambulance if you or someone else is experiencing anaphylaxis. However, urticaria can occur in a severe allergic reaction called anaphylaxis. Urticaria on its own is not a serious condition. In these cases, the raised areas or weals last longer than 24 hours, are more painful, and can leave a bruise. chronic urticaria – in rarer cases, where the rash persists or comes and goes for more than six weeks, often over many yearsĪ much rarer type of urticaria, known as urticarial vasculitis, can cause blood vessels inside the skin to become inflamed.acute urticaria – if the rash clears completely within six weeks (most cases last 24 to 48 hours). ![]() ![]() The raised areas can range from a few millimetres to the size of a hand. Urticaria rash can be in one place or spread through the body ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |