Chronic hives, also called urticaria, are batches of raised, red or white itchy welts (wheals) of different sizes that show up and disappear. Though most cases of hives will go away within a few weeks or even sooner, for some people they end up being a long-term problem. Chronic hives are any hives that stay for more than six weeks or go away, but show up repeatedly.
In most of the cases of chronic hives, a cause isn’t ever clearly identified. In some cases, they may be related to an underlying autoimmune disorder, like thyroid disease or lupus.
Though the original cause of chronic hives is usually not identified, there is treatment that can help with symptoms. For most people, antihistamine medications gives the most relief.