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Hives and Thyroid
There is strong relation between thyroid autoimmunity and hives. Some of the studies state that Hashimoto’s thyroiditis can be a reason of recurrent hives. Medical research studies have shown that Children with chronic hives should be screened for autoimmune thyroid disease by blood testing their thyroid hormone levels and thyroid antibodies. Hyperthyroidism is a condition where the thyroid produces too much thyroid hormone. Hypothyroidism is a condition when your thyroid does not produce enough thyroid hormone. The treatments for these conditions can sometimes develop hives as a side effect. At times, hives themselves can be a cause to have your thyroid tested.
- Antithyroid drugs: It includes tapazole or methimazole and propylthiouracil (PTU). It is used to treat hyperthyroidism. The possible side effect of this treatment is hives.
- Dermatitis herpetiformis: It is a condition that can be connected with autoimmune thyroid disease. The common symptoms of this disease are hives on back and lower extremities.
- Chronic urticaria: It is also known as chronic hives. It is a situation that increases the risk of thyroid, imbalance. In certain types of hives the underlying cause is autoimmunity related to the presence thyroid antibodies or an acquired C1 inhibitor deficiency. When chronic hives is experienced and is an unusual episode not easily explained by an allergen or another obvious cause, a patient should see their doctor and ask for thyroid antibodies and thyroid function tests to be ordered. These tests can prohibit thyroid autoimmunity or help confirm it as being the cause of this condition.
The researchers suggest that children with chronic hives be regularly tested for T4, TSH and antithyroid antibodies in order to detect thyroid abnormalities as early as possible. According to the researchers, thyroid autoimmunity and hypothyroidism can develop several years after onset of the hives.
- Radioactive iodine treatment: Radioactive iodine treatment for hyperthyroidism is at times used as a tool to determine how well your thyroid id functioning. This treatment can lead to hives.
- Allergic reaction: If your hives are caused due to thyroid medication reaction then you should consult your doctor as he can discontinue your medication and try a different medication.
The two types of thyroid antibodies that are common in causing autoimmune thyroid disease are “anti-thyroidperoxidase” (TPO) and "anti-thyroglobulin" (TG) antibodies. If any one of these or both is found to be positive in chronic hives patient then this could be the cause.
Many researchers found that thyroid autoimmunity may be connected with chronic hives in some patients who are euthyroid, and that treatment with thyroid hormone can result in reduction of their hives. Whereas the antithyroid antibodies demonstrated autoimmunity, their levels had no connection to the urticaria's actvitity. The lower thyroid-stimulating hormone (TSH) level with treatment did have a direct connection to the reduction of symptoms, but, leading the researchers to consider that an inflamed thyroid gland may be releasing something that causes the hives.
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