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Some patients with chronic urticaria have autoimmune thyroid disease
The background of the study. Most
patients with chronic urticaria (hives) are not allergic to any
identifiable substance, and the urticaria is thought to be an autoimmune
disorder. The relationship between chronic urticaria and autoimmune
thyroid disease was evaluated in this study.
How the study was done. There were
four study groups. One consisted of 45 patients with chronic urticaria
(defined as three or more episodes of urticaria weekly for at least
six weeks) seen in a dermatology clinic. The second group consisted
of 32 patients with goiter, thyroid nodules, hyperthyroidism, or
hypothyroidism who had a high serum concentration of antithyroid
antibodies. The third group consisted of 22 patients with similar
thyroid disorders, but normal serum concentrations of the antibodies.
The fourth group consisted of 30 normal subjects.
The results of the study. The 45 patients with chronic urticaria had three or more episodes of urticaria per week for 3 months to 15 years; they had been treated with an antihistamine or glucocorticoid. All had normal thyroid function, but 12 (27 percent) had a high serum concentration of antithyroid peroxidase or antithyroglobulin antibodies; four were considered to have Hashimoto’s thyroiditis, three had thyroid nodules, and five had no thyroid disorder. Six patients in the two thyroid-disorder groups had a history of urticaria, and four of them had urticaria during the one-year follow-up period. None of the normal subjects had a history of urticaria.
The conclusions of the study. Patients with chronic urticaria are more likely to have high serum concentrations of antithyroid antibodies than normal subjects.
The original article. Verneuil L, Leconte C, Ballet JJ, Coffin C, Laroche D, Izard JP, Reznik Y, Leroy D. Association between chronic urticaria and thyroid autoimmunity: a prospective study involving 99 patients. Dermatology 2004;208:98-103.
Next Article: Many women with the
polycystic ovary syndrome have high serum antithyroid antibody
concentrations
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| Thyroid Digest Index | | | July 2004 Thyroid Digest |
