A service dog that can help its owner when suffering from an episode by circling them in a crowded area to create personal space is for:

Psychiatric service dogs give assistance to people with mental health issues, such as obsessive-compulsive disorder, post-traumatic stress disorder, schizophrenia, and other conditions. The video below will review some of the topics we've already discussed and explain the differences between therapy dogs, emotional support dogs, and service dogs. It'll also give you an insight into what psychiatric service dogs do. Click here: https://www.youtube.com/watch?v=raIxhZ9Zunw.

Source: Jen Karetnick for the American Kennel Club, 2019. Photo by Unknown.