"We recently observed that the majority of patients with primary SS had autoantibodies many years before they experienced the first symptoms of Sjögren's syndrome. 10"
"ANAs, RF, and antibodies against Ro 60/SSA and Ro 52/SSA were detected in samples obtained as early as 19–20 years (median 4.3–5.1 years) before diagnosis, whereas antibodies against La/SSB were detected as early as 16 years (median 3.5 years) before diagnosis."
Prediction of Sjögren's Syndrome Years Before Diagnosis and Identification of Patients With Early Onset and Severe Disease Course by Autoantibody Profiling - Arthritis and Rheumatology Volume 67, Issue 9, 24 June 2015
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"Although the majority of people with Hashimoto's will not develop any other disorders, it's important to know what some of these autoimmune conditions are in case you do start to experience symptoms. Keep in mind, too, that you may be more likely to develop Hashimoto's if you have one of these other conditions.
Type 1 diabetes
Pernicious Anaemia
Addison's Disease
Vitiligo
Celiac Disease
Alopecia Areta
Systematic Lupus Erthematosus (SLE)
Rheumatoid Arthritis
Sjogren's Syndrome
Inflammatory Bowel Disease
Multiple Sclerosis (MS)"
The Everything Guide To Thyroid Disease by Theodore C. Friedman, MD, PhD and Winnie Yu Scherer