[Sjögren's Syndrome].

Sjögren's syndrome is a systemic autoimmune disease that is characterized by the presence of keratoconjunctivitis sicca, xerostomy and a large spectrum of signs and symptoms that translate into a very heterogeneous disease. The mild form that affects mucosal tissues is the most frequent, but there are more severe and active patterns, manifested by the presence of extraglandular affection with a worse prognosis. The clinical spectrum includes anything from mucosal alterations, Raynaud's phenomenon, parotid enlargement or arthritis, but can be aggravated by the presence of neurological, lung or renal affection. Initial therapy includes topical treatment with artificial tears, nocturnal cream and drugs that stimulate secretion for important glandular affection, while severe systemic affection merits immunosuppressant therapy. There has been recent evidence that biologic therapy is useful for the treatment of severe and resistant cases.