Final answer:
MAGIC syndrome is the overlap between relapsing polychondritis and Behcet's disease, featuring auricular chondritis among symptoms commonly seen in Behcet's like recurring ulcers.
Step-by-step explanation:
The syndrome that is described as an overlap between relapsing polychondritis and Behcet's disease is MAGIC syndrome. MAGIC stands for Mouth And Genital ulcers with Inflamed Cartilage. The features of MAGIC syndrome typically include both auricular chondritis, which is inflammation of the cartilage of the ears, and symptoms that are commonly associated with Behcet's disease, such as recurring oral and genital ulcers. While Behcet's affects blood vessels resulting in various symptoms including skin lesions, and relapsing polychondritis involves recurrent episodes of inflammation of cartilage throughout the body, MAGIC syndrome presents characteristics of both conditions.