What is calcium buildup on the wrist?
Calcium buildup, anywhere in the body in general, is called
'calcification' or 'calcinosis' if it occurs in soft tissue.
However, I'm having trouble answering your question because you
have not specified what part of the wrist you are referring to
(i.e, bone, muscle, cartilage, or cutaneous tissue.) For example,
calcium buildup specifically in the skin is called 'calcinosis
cutis' and is a feature of diseases such as scleroderma.