Abstract

Morvan's syndrome with anti contactin associated protein like 2 voltage gated potassium channel antibody presenting with syndrome of inappropriate antidiuretic hormone secretion.

Sharma, Anjani Kumar Kaur, Manminder Paul, Madhuparna

Abstract


Morvan's syndrome is a rare autoimmune disorder characterized by triad of peripheral nerve hyperexcitability, autonomic dysfunction, and central nervous system symptoms. Antibodies against contactin-associated protein-like 2 (CASPR2), a subtype of voltage-gated potassium channel (VGKC) complex, are found in a significant proportion of patients with Morvan's syndrome and are thought to play a key role in peripheral as well as central clinical manifestations. We report a patient of Morvan's syndrome with positive CASPR2anti-VGKC antibody having syndrome of inappropriate antidiuretic hormone as a cause of persistent hyponatremia.


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