Dry syndrome is more severe compared to SLE. A large proportion of patients with dry syndrome have only mild symptoms such as dry mouth, dry eyes, enlarged parotid glands, and tooth loss. However, SLE patients are prone to develop involvement of important internal organs, such as the lungs, and most commonly the kidneys, with large amounts of proteinuria. At the same time, SLE may also involve the heart muscle, and severe patients may even develop lupus encephalopathy. From this point of view, because lupus is prone to internal organ involvement, lupus is much more serious than dry syndrome disease.