Research progress on the pathogenesis and quality of life of patients with primary Sjögren's syndrome complicated by depression.

In the past decade, an increasing number of studies have found a relationship between the occurrence and development of depression and autoimmune diseases, and the high prevalence of depression in patients with connective tissue diseases has also been confirmed. Primary Sjögren's syndrome (pSS) is a chronic autoimmune exocrinopathy characterised by lymphocytic infiltration and exocrine gland destruction. Depression in pSS patients is common, and the factors contributing to this condition are complicated. pSS patients with depression generally have a lower quality of life than pSS patients without depression. Several pathophysiological mechanisms involved in the condition have been proposed in recent years. Thus, in this review, we summarised recent progress on the impact of depression on pSS patients' quality of life, the possible pathogenesis underlying the development of depression in pSS patients and the management of such patients.