Yes: What you need to know, as an ordinary person, is that in the us it is usually due to autoimmunity, in the rest of the world it is often due to tuberculosis, it is rare, most people who think they have it are actually responding to life stress, it is easily ruled in or out with labs provided the practitioner knows what he/she is doing, and patients must take rx and carry a needle and information.
Answered 4/16/2016
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