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Decreased circulating vitamin D concentration
The concentration of vitamin D in the blood circulation is below the lower limit of normal. [from HPO]
Undifferentiated connective tissue syndrome
A rare systemic autoimmune disease characterized by the presence of signs and symptoms suggestive of a systemic autoimmune disease that do not fulfil the existing classification criteria. The main clinical manifestations are arthritis with arthralgia, Raynaud's phenomenon, xerostomia, xerophthalmia, and leukopenia, while neurologic or renal involvement are virtually absent. [from ORDO]
Connective tissue disorder
A non-neoplastic or neoplastic disorder that affects the connective tissue. [from NCI]
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