Mixed connective tissue disease
A systemic autoimmune condition combining features of several connective tissue diseases. Clinical and organ manifestations are assessed by a clinician.
About the condition
A systemic autoimmune condition combining features of several connective tissue diseases. Clinical and organ manifestations are assessed by a clinician.
Mixed connective tissue disease combines features of lupus, systemic sclerosis and myositis. Its clinical profile can evolve over time.
Symptoms
Raynaud phenomenon, swollen hands, arthritis and muscle weakness may occur. Features of several autoimmune diseases can overlap.
Beyond hands and joints, the oesophagus, muscles and lungs may be affected. Skin severity does not always reflect organ risk.
Diagnosis
A rheumatologist evaluates clinical features together with anti-U1-RNP. Antibodies without compatible manifestations do not confirm diagnosis.
High anti-U1-RNP is interpreted with a compatible symptom pattern. Baseline assessment looks for lung, heart and muscle involvement.
Treatment
Treatment follows the dominant manifestations and organ involvement. Anti-inflammatory or immunomodulatory therapy may be needed.
There is no single regimen for everyone: arthritis, myositis and lung disease need different decisions. Raynaud care includes warmth and indicated vascular therapy.
Monitoring
Lung monitoring and pulmonary hypertension assessment are important. Report new breathlessness and reduced exercise tolerance.
Follow-up testing depends on manifestations, not antibody levels alone. Fainting, new chest pain or rapidly worsening breathing needs urgent care.
Sources
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