Do hives get progressively worse?

No. For people that have had hives for a long period of time (more than a couple months) they may get better and worse in intensity off and on, but don't usually worsen steadily or progressively. However, they may continue for a long time, which can be frustrating. Usually, we can find a combination of medicines that controls most hives, but it can take some trial and error to find what works.