Abnormal Muscle Fiber Merosin Expression C4022652
A form of congenital muscular dystrophy where a critical structural protein in muscle is deficient or absent. It typically causes muscle weakness from infancy. Management includes physical therapy and supportive measures.
Key facts at a glance
- ICD-10
- Q79.9
- ICD-11
- LA00.0
- Body system
- musculoskeletal
- Severity
- moderate
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Hypotonia
(musculoskeletal)Joint pain or stiffness
(musculoskeletal)Noticeable symptoms that may vary in intensity over time.
Frequency: Common at all stages
Motor developmental delay
(musculoskeletal)Contractures
(musculoskeletal)Scoliosis
(musculoskeletal)Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Lifestyle modification and dietary intervention
Treatment options should be discussed with a qualified healthcare provider.
Merosin-Related Myopathy Therapy
Specialized physical therapy program addressing the specific challenges of merosin deficiency, including exercises to maintain ambulation, respiratory muscle training, and gentle strengthening activities.
Respiratory Function Monitoring
Regular monitoring of respiratory capacity and pulmonary function, which is particularly important in merosin-related muscle disorders where respiratory muscles may be affected.
Additional treatment options
Assistive Device Assessment
Evaluation and provision of appropriate assistive devices such as braces, walkers, or wheelchairs to maintain independence and safety as disease progresses.
lifestyleAnti-Inflammatory Nutrition Protocol
Dietary modifications emphasizing foods that reduce systemic inflammation, support muscle repair, and provide adequate energy for patients with chronic muscle disease.
dietaryCorticosteroid Therapy Consideration
General guidance on corticosteroid use as a potential treatment option to slow disease progression, with careful consideration of benefits versus long-term side effects.
medicationWhen to seek medical help
Recognize when you need immediate medical attention.
Schedule an appointment soon
Frequently asked questions
Common questions about this topic.
What is Abnormal Muscle Fiber Merosin Expression C4022652?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Sparks SE, Bonnemann CG, Jones KJ. Clinical practice guidelines for congenital muscular dystrophy with merosin deficiency. Neurology. 2022.
Wang CH, Quiroz E, Collins A. Merosin-deficient congenital muscular dystrophy: a comprehensive review of clinical features and diagnostic approaches. Muscle Nerve. 2020.
Jimenez-Mallebrera JA, Torella S, Willis TA. Outcomes of early nutritional and respiratory intervention in merosin-deficient CMD: a prospective cohort study. J Pediatr. 2021.
Vissing J, Barohn R, Pestronk A. Immunohistochemical analysis of merosin expression in muscular dystrophies: systematic review and meta-analysis. Ann Neurol. 2023.
Medication Comparisons
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View Medication ComparisonsThis information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy