Angioedema. Swollen neck of a 78-year-old woman caused by angioedema (angioneurotic oedema). This is an allergic reaction characterised by the swelling of soft tissue in the mouth, larynx and other areas. The most common cause is a sudden allergic reaction to certain foods, such as strawberries or seafood. Less common causes include drugs, insect bites and pollen. Angioedema can cause difficulty with speaking and breathing, potentially blocking the windpipe. Treatment is with anti-inflammatory drugs. Anti-histamines may help to reduce the symptoms.
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