Chronic spontaneous urticaria and angioedema in a patient with autoimmune thyroid disease resolved after thyroidectomy
The link between chronic urticaria and accompanying thyroid disease is still not understood, with current treatment focusing on antihistamines and levothyroxine. A 35-year-old female patient presented with chronic idiopathic urticaria and facial angioedema for 9 months prior to evaluation. Oral corticosteroid therapy, antihistamines, leukotriene-antagonists, selenium, and omalizumab were all administered, with the disease relapsing within several days, accompanied with facial angioedema of varying severity. Laboratory results were negative for antinuclear antibodies (ANA) and cytoplasmic antineutrophil antibodies (ANCA). Immunoglobulins and complement levels were normal. Autologous serum testing, and skin-prick test for common inhalatory allergens were all normal. Levothyroxine was then administered with no effect on the symptoms. After considering all of the available treatment options, the patient decided to undergo total thyroidectomy. Urticaria and angioedema subsided on the third postoperative day, and she remains free of symptom recurrence during 10 months of postoperative follow-up. Her antiTPO titer decreased from > 1300 to 31.1 kIU/L and antiTG decreased from 272 to 4.9 kIU/L three months after the surgery. The most important element in this case report is an unexpected extra-thyroid presentation of an autoimmune thyroid disease, with a newly described association with facial angioedema. Additional important evidence may confirm the hypothesis that both conditions are indeed caused by a common immunological patohogenetic pathway that should be routinely evaluated in patients presenting with chronic idiopathic urticaria.
Publisher URL: https://www.sciencedirect.com/science/article/pii/S0385814620302443
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