Sjögren's syndrome is not usually life-threatening. Some people may only notice mild symptoms such as mild dry eyes and a mild dry mouth. Other people develop more irritating and disabling symptoms affecting their eyes, mouth, vision and eating and can also have uncomfortable joint pains and tiredness.
Sometimes symptoms can go away for long periods of time (go into remission). Rarely, some people develop more serious problems such as the kidney and lung problems.
Some people with Sjögren's syndrome develop another autoimmune disorder such as rheumatoid arthritis, systemic lupus erythematosus or polymyositis.
About 1 in 100 people with Sjögren's syndrome develop lymphoma, most commonly non-Hodgkin's lymphoma. This lymphoma can usually be treated and your doctor will review you regularly to look for signs of this.