This is not a very common problem but if it happens to you, you will never forget it.

Hives is a skin rash notable for pale red, raised, itchy wheals or bumps, usually caused by certain allergic reactions. However, there are many non-allergic causes as well.

Viral hives is caused by a viral infection. Some vial infections i.e. acute viral infection can cause acute hives i.e. these types of viral hives do not last more than a few hours. If the hives rash persists for more than six weeks and appears more than twice a week, they are chronic hives.

This is a vast topic and writing everything here is not possible, but you can click here for more on viral hives.