It could be true for some of them, but it's also possible that "autoimmune" is not a very good description of what's happening for some others. Disorders lacki

It could be true for some of them, but it's also possible that "autoimmune" is not a very good description of what's happening for some others. Disorders lacking an obvious cause seem to get lumped into the autoimmune category whenever the symptoms are related to inflammation. Before modern medicine, these disorders might have been masked by or passed as a milder form of tuberculosis or something else. It's still possible that there are pathogens involved that haven't been identified.