Asexual organizations and other Internet resources play a key role in informing people about asexuality. The lack of research makes it difficult for doctors to understand the causation. Like with any sexual orientation, most people who are asexual are self-identified. This can be a problem when asexuality is mistaken for an intimacy or relationship problem or for other symptoms that do not define asexuality. There is also a significant population that either does not understand or does not believe in asexuality, which adds to the importance of these organizations to inform the general population; however, due to the lack of scientific fact on the subject, what these groups promote as information is often questioned.