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[Hypothyroid myopathy. Communication of 4 cases]
R Téllez1, P Arriagada, M A Avaria
1Depto de Endocrinología, Hospital Dr Sótero del Río, Santiago de Chile.
Revista Medica De Chile
|January 1, 1994
Summary
Primary hypothyroidism can present with muscle issues like myopathy. Thyroid hormone replacement therapy effectively improved muscle symptoms in all reported patients.
Area of Science:
- Endocrinology
- Neurology
- Muscle Physiology
Background:
- Primary hypothyroidism is a common endocrine disorder.
- Muscle involvement is an under-recognized manifestation of hypothyroidism.
- Early diagnosis and treatment are crucial for managing hypothyroid myopathy.
Observation:
- Four patients (3 female) with primary hypothyroidism presented with significant muscle involvement.
- Key diagnostic signs included myoedema and delayed relaxation of tendon reflexes.
- Electromyographic and histological studies were conducted in one patient.
Findings:
- Thyroid substitution therapy led to notable improvement in myopathy across all patients.
- Muscle symptoms resolved or significantly reduced following treatment.
- This highlights the direct impact of thyroid hormones on muscle function.
Implications:
- Muscle involvement should be considered in the differential diagnosis of myopathies.
- Prompt thyroid hormone replacement can reverse hypothyroid myopathy.
- This underscores the importance of comprehensive patient evaluation in endocrinology.