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Myotonia associated with hyperadrenocorticism in two dogs
G R Swinney1, S F Foster, D B Church
1Department of Veterinary Clinical Sciences, University of Sydney, New South Wales.
Australian Veterinary Journal
|December 23, 1998
Abstract:
Two dogs developed a disabling gait abnormality characterised by stiffness. The abnormality was consistent with a diagnosis of myotonia secondary to hyperadrenocorticism. The first dog had iatrogenic hyperadrenocorticism, and its signs improved substantially after corticosteroid administration was gradually withdrawn. The second had pituitary-dependent hyperadrenocorticism, but myotonic signs progressed despite effective mitotane therapy. Procainamide administration reduced the myotonic stiffness in the second case.