Urticaria is rarely life-threatening. However, when hives occur inside the throat or lungs or on the tongue, airways may be blocked. When this happens, it is important to seek medical assistance immediately. Generally, these hives occur as an allergic response to something eaten or inhaled. Patients feel as though their throat is closing off and experience difficulty breathing. Breathing difficulty tends to worsen rapidly with each breath, making immediate transport to the hospital vital.
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