Figure 2.

Comparative features between GCA, PMR, and TAK. PMR and GCA are overlapping clinical entities as patients can concurrently have both conditions. However, more patients with GCA have PMR than do patients with PMR have GCA. Meanwhile, GCA and TAK share features of vascular inflammation in large vessels. PMR, GCA, and TAK all share elevated levels of IL-6 and changes to circulating immune cells. However, distinguishing TAK from GCA are some circulating lymphocytes and cytokines, vascular pathology, and patient age. Many features are common to other types of vascular disease, such as AAA (red). There is not currently enough information to determine the extent to which CIA overlaps with other conditions.