Diabetes Mellitus Manifests As Focal Dystonia.

Diabetes is one of the most common chronic diseases affecting over 400 million patients worldwide, many of which are affected with devastating macrovascular and microvascular complications. Diabetes affects both the peripheral and the central nervous systems. One of the unusual effects of hyperglycemia is involuntary movement, termed hyperglycemia-induced involuntary movement (HIIM). Here, we present a case of a middle-aged woman with neck dystonia as the initial manifestation of type 2 diabetes. Achieving euglycemia with insulin alone resulted in complete resolution of the neck dystonia.