Hereditary Inclusion Body Myopathy Type 4 C4749501
A progressive muscle disease causing increasing weakness, typically beginning in young adulthood. Care is supportive, including physical therapy and mobility aids, with no cure currently available.
Key facts at a glance
- ICD-10
- Q79.9
- ICD-11
- LA00.0
- Body system
- musculoskeletal
- Severity
- severe
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Respiratory muscle weakness
Cardiac conduction abnormalities
Joint pain or stiffness
(musculoskeletal)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Progressive muscle weakness
(musculoskeletal)Proximal muscle weakness
(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
Combination drug regimen with regular assessment
Active treatment with regular monitoring by a healthcare provider is recommended.
Resistance and strength training program
Supervised exercise program using low-impact resistance training to maintain muscle strength, improve endurance, and slow progressive weakness. Emphasis on proper technique to prevent muscle damage.
Assistive device assessment and provision
Comprehensive evaluation by occupational therapists to determine appropriate walking aids, wheelchairs, or home modifications that maximize independence and safety as disease progresses.
Additional treatment options
Psychological support and counseling
Mental health support including counseling, cognitive behavioral therapy, and support groups to address the emotional impact of progressive muscle disease, including depression and anxiety management.
psychologicalEnergy conservation techniques
Training in pacing strategies, activity scheduling, and ergonomic modifications to optimize functional capacity throughout the day while managing fatigue associated with muscle weakness.
lifestyleRespiratory function surveillance
Regular pulmonary function testing including vital capacity measurements to detect and monitor respiratory muscle involvement, enabling early intervention before respiratory failure develops.
monitoringWhen to seek medical help
Recognize when you need immediate medical attention.
See a doctor within 24 hours
Moderate to severe symptoms that may indicate worsening of this condition. Prompt medical evaluation is recommended.
Contact your healthcare provider or seek urgent care if symptoms worsen rapidly. Go to the emergency department for life-threatening symptoms.
Frequently asked questions
Common questions about this topic.
What is Hereditary Inclusion Body Myopathy Type 4 C4749501?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
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This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy