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.
Gaze-evoked nystagmus (GEN) is seen in both physiological and pathological conditions. In normal conditions, it is usually of low amplitude and symmetrical. The horizontal, gaze-evoked potential may be associated with medications and posterior fossa tumors.Sedatives and anticonvulsants are the most commonly reported drugs that cause bilateral GEN. 1 Carbamazepine-induced nystagmus has been reported in the literature. These reports described downbeat nystagmus caused by carbamazepine. [2][3][4] To our knowledge, horizontal nystagmus associated with carbamazepine has been reported only once. 5 Our report presents another case of horizontal nystagmus associated with carbamazepine.
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