Most of the time, hives as the only symptom can be safely managed at home, without the need to see a doctor. If hives appear soon after a certain food, medicine or insect sting, and resolve within a few hours after no further exposure to this trigger, then allergy testing may be indicated. Sometimes these cases may also have associated swelling of the lips/eyes. If hives are present for over a few days with no obvious cause, allergy tests are not needed, in these cases there is generally no external trigger and the hives with gradually improve with time. Hives occur when a chemical called histamine is released. These hives commonly come and go for a few days to weeks. Hives can commonly occur without a trigger, and may be the immune system responding to a viral illness/cold. Hives in this case commonly last for a few hours once the trigger has been removed. Hives are a skin rash which can be caused by an allergic reaction, when the immune system responds to a substance such as a food or insect venom. Hives only, without other features described above, is not anaphylaxis. an EpiPen) with you at all times. Your child could also wear a medical alert pendant or bracelet to let other people know what may cause them to have an allergic If your child has experienced anaphylactic reactions in the past, you may be advised to have an adrenaline autoinjector (e.g. becoming pale and floppy (infants/young children).Ĭall an ambulance immediately if your child has symptoms of anaphylaxis.swelling and/or tightness in the throat.difficulty with breathing and/or noisy breathing.Sometimes children have a more serious allergic reaction known as anaphylaxis. Symptoms of anaphylaxis include: Hives can look or feel unpleasant, but usually they are harmless. When there is no identifiable cause (idiopathic urticaria), hives will usually go away within a few days, but may last weeks. Depending on the trigger, hives usually settle over hours.The area of affected skin can vary in size from quite small to as large as a dinner plate. Often the wheals join together to form larger swellings.New batches may develop as old areas fade away. The wheals appear in batches or clusters.A single wheal often lasts several hours before fading without trace.Hives are normally very itchy, but can also sting.The wheals are red on the outside and can be white in the middle. If your child has hives, they may have raised round wheals that look like mosquito bites. The triggers may be different for each child, and it is common that a trigger cannot be identified. Treatment includes medicines and avoiding known triggers. It is common for hives to occur in children where there is no identifiable cause, this is called idiopathic urticaria. Hives are very common – one out of every five people will have hives at some time in their life. Hives can be a sign of an allergic reaction to things like food or an insect sting. The medical word for hives is urticaria ( er-tuh-care-ia). They are often itchy, but sometimes also sting. Hives are slightly raised, red patches of skin called wheals (or welts). They occur in groups on any part of the body, and can look like mosquito bites.
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