Sjogren's Syndrome is a systematic disease that affects the entire body. According to the Jerome L. Greene Sjogren’s Syndrome Center at John Hopkins, "Sjogren's defining clinical features, dryness of the eyes and mouth, arise from an autoimmune process affecting the lacrimal and salivary glands. Sjögren’s syndrome is one of the most prevalent systemic rheumatic diseases. The disease may affect the nervous system, lungs, and kidneys in addition to the exocrine glands. Chronic fatigue, joint pain, and neuropathic pain are significant sources of disability. Late complications may include blindness, dental destruction, oral candidiasis, and non-Hodgkin lymphoma."
The following illustration and list of symptoms was taken directly from the Sjogren's Syndrome Foundation website.