CLAUDE M. HOLLAND JR., M.D.; S. RICHARDSON HILL JR., M.D.
Myotonia dystrophica is a familial disorder with multisystem involvement characterized by myotonia, atrophy of distal muscle components, cataracts, frontal baldness and various endocrinopathies. Myotonia, a prolonged muscular contraction, or a delayed relaxation following a voluntary, mechanical or electrically initiated contraction, is most pronounced in the first contraction following rest and is frequently aggravated by cold. Conversely, it is greatly improved by warmth and progressively diminishes with each succeeding contraction. The symptom complex of myotonia has been reported following peripheral neuritis, various acute infectious diseases and hypothyroidism,1 but is most characteristic of myotonia dystrophica and myotonia congenita.
Ravin1 gives Bell
HOLLAND CM, HILL SR. MYOTONIA DYSTROPHICA: REPORT OF SIX CASES IN ONE FAMILY, WITH AN ANALYSIS OF THE METABOLIC DEFECTS*. Ann Intern Med. 1956;44:738–753. doi: https://doi.org/10.7326/0003-4819-44-4-738
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Published: Ann Intern Med. 1956;44(4):738-753.
Adrenal Disorders, Endocrine and Metabolism, Hospital Medicine, Rheumatology.
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