What is sjogren's syndrome

Overview

Sjögren's syndrome is a chronic autoimmune disorder characterized by the immune system attacking the glands responsible for producing moisture. Specifically, the lacrimal glands (which produce tears) and salivary glands become inflamed and damaged, resulting in severe dryness of the eyes and mouth. While these are the primary symptoms, the syndrome can also affect other organs and tissues throughout the body. The condition is named after Swedish ophthalmologist Henrik Sjögren, who first described it in 1933.

Types and Classification

There are two forms of Sjögren's syndrome:

• Primary Sjögren's syndrome: This type develops independently without association with other autoimmune diseases. It is the more common form, affecting only the moisture-producing glands.
• Secondary Sjögren's syndrome: This occurs in people who already have another autoimmune disease, such as rheumatoid arthritis, lupus, or scleroderma. The secondary form often develops years after the initial autoimmune condition.

Symptoms and Complications

The hallmark symptoms are dry eyes (xerophthalmia) and dry mouth (xerostomia). Dry eyes may feel gritty, cause discomfort, redness, and blurred vision. Dry mouth can lead to difficulty eating, speaking, or swallowing, increased tooth decay, mouth infections, and loss of taste. Beyond these primary symptoms, Sjögren's can affect multiple organ systems, causing joint pain, fatigue, digestive issues, and in severe cases, lung or kidney involvement. Some patients experience muscle pain and cognitive difficulties sometimes called "brain fog."

Diagnosis and Testing

Diagnosis typically involves multiple tests. Blood tests detect specific antibodies associated with Sjögren's, such as anti-SSA/Ro and anti-SSB/La antibodies. Imaging studies like scintigraphy measure saliva and tear production. Ocular tests evaluate tear quality and quantity. A lip biopsy may be performed to examine salivary gland tissue for inflammation and immune cell infiltration. These comprehensive tests help confirm the diagnosis and differentiate Sjögren's from other dry mouth and eye conditions.

Treatment and Management

While there is no cure, treatments manage symptoms and prevent complications. Artificial tears and saliva replacements provide immediate relief. Medications like pilocarpine and cevimeline stimulate remaining gland function. Anti-inflammatory medications may reduce gland inflammation. Patients should maintain excellent oral hygiene, use sugar-free lozenges, stay hydrated, and avoid dry environments. In severe cases, immunosuppressive medications may be prescribed. Regular monitoring with an ophthalmologist and rheumatologist is essential to manage the condition and screen for complications.