Undifferentiated connective tissue disease has relatively mild symptoms and does not usually affect the normal life expectancy of the patient. The disease is mainly seen in women of childbearing age and often starts insidiously, with an average time between the onset of symptoms and presentation to a doctor of two to three years. Patients may present with non-specific symptoms such as malaise, low-grade fever and swollen lymph nodes, as well as specific manifestations such as arthralgias, Raynaud’s phenomenon and mucosal skin damage, and because it rarely involves vital organs such as the liver, kidneys, lungs and the central nervous system, it usually has no impact on the patient’s life cycle.