In medicine, mixed connective tissue disease (also known as Sharp's syndrome), commonly abbreviated as MCTD, is an autoimmune disease, in which the body's defense system attacks itself. It was characterized in 1972.
It is sometimes equated with the term "Undifferentiated connective tissue disease",) but some sources specifically reject such assertions of equivalence. The term was introduced by Leroy in 1980.
Read more about Mixed Connective Tissue Disease: Clinical Features
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