An Underlying Health Issue
Chronic hives could be an obvious symptom of a more serious health issue. Thus, an extensive blood test is necessary to find out the underlying cause. For example, people with HIV, hepatitis, thyroid disease, lymphoma, or lupus might develop hives as a sign of their condition. Because these patients tend to experience chronic hives, the most reliable and effective way of relief is perhaps medications. Hives would also be caused by viruses as well. So if your rashes keep lasting for an extended period, ask your doctor for proper treatment. [3]
