What does island syndrome mean?

Symptom: Syndrome in English, also known as syndrome, is a medical term, which refers to the clinical features, symptoms and phenomena that often appear at the same time when some possible diseases appear. At this time, doctors can be alert to the possible related changes for one of the symptoms, but the actual pathogen, the name of the disease to be diagnosed or the related physiological changes may not be known. However, some previously unknown disease manifestations still retain the name of syndrome after research. The original meaning refers to a series of symptoms that appear at the same time due to the changes in the interconnection of some diseased organs. Later, it refers to the intention of some people to reach an agreement because of mutual influence. For example, "Stockholm syndrome" means that in the hijacking incident, the hostages reached an agreement with the robbers because they sympathized with them. Instead of cooperating with the police, they helped the robbers deal with the police. Because it first happened in Stockholm, it is called "Stockholm syndrome"

So the syndrome of island syndrome is a characteristic of an island ~ a syndrome in a specific environment ~