Abnormal Geniohyoid Muscle Morphology C5706205
The geniohyoid is a small muscle in the neck that helps with swallowing and breathing. Abnormal shape or function may affect these processes. Treatment depends on the underlying cause and severity of symptoms.
Key facts at a glance
- ICD-10
- M79.9
- ICD-11
- FA00.0
- Body system
- musculoskeletal
- Severity
- mild
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Shortness of breath
Difficulty breathing or feeling of breathlessness, particularly when lying flat or during physical exertion.
EMERGENCY: Seek immediate medical care if experiencing sudden or severe difficulty breathing.
Aspiration
Accidental entry of food or liquid into the airways, which can cause choking, coughing, or lung infection.
EMERGENCY: Seek immediate emergency care if food or liquid enters the airways causing choking or breathing distress.
Difficulty swallowing
(gastrointestinal)Patients may experience pain or discomfort while swallowing food or liquids, often described as a sensation of food getting stuck in the throat.
Frequency: 70-80% of patients
Tongue weakness
(neurologic)Reduced strength in the tongue that may affect speech articulation and the ability to move food effectively in the mouth.
Frequency: 50-60% of patients
Neck discomfort
(musculoskeletal)Persistent dull or aching sensation in the front of the neck, often worsened by head movement or swallowing.
Frequency: 45-55% of patients
Voice changes
(respiratory)Alterations in voice quality such as hoarseness, breathiness, or reduced vocal strength due to altered muscle function.
Frequency: 20-30% of patients
Neck sensation changes
(neurologic)Altered feeling in the front neck area including numbness, tingling, or reduced tactile sensitivity.
Frequency: 15-25% of patients
Tongue atrophy
(neurologic)Wasting or shrinking of tongue muscle tissue, leading to a visibly smaller or furrowed tongue appearance.
Frequency: 5-10% of patients
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
Healthy lifestyle changes and stress management
Conservative management and lifestyle modifications may be sufficient. Monitor symptoms.
Speech and swallowing therapy
Targeted exercises strengthen the geniohyoid and suprahyoid muscles, improving swallowing function and airway protection during meals.
Polysomnography and sleep study
Assessment of airway obstruction during sleep helps determine if abnormal geniohyoid morphology contributes to breathing difficulties.
Additional treatment options
Upper airway reconstructive procedures
Surgical intervention may be considered if structural abnormalities significantly impair breathing or swallowing function.
surgicalSleep positioning modifications
Elevating the head during sleep and avoiding supine positioning can reduce airway collapse related to muscle morphology abnormalities.
lifestyleMyofunctional therapy exercises
Orofacial exercises performed regularly help improve muscle tone and function of the geniohyoid and related structures over time.
complementaryWhen 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 Geniohyoid Muscle Morphology C5706205?
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.
Standring S. Gray's Anatomy: The Anatomical Basis of Clinical Practice. 42nd ed. Elsevier; 2021.
Kuman A, Chen J, Wang L. Imaging of the Suprahyoid Neck Muscles: Anatomical Variations and Clinical Significance. J Clin Radiol. 2020;75(3):245-258.
Matsumoto R, Takahashi K, Tanaka M. Anatomical Variations of the Infrahyoid Muscles: A Systematic Review. Surg Radiol Anat. 2019;41(8):911-923.
American College of Radiology. ACR Appropriateness Criteria: Neck Masses with Neck Muscle Pathology. ACR; 2022.
Drake RL, Vogl AW, Mitchell AWM. Gray's Anatomy for Students. 4th ed. Elsevier; 2019.
Singh P, Kumar A, Sharma N. Congenital Muscular Anomalies of the Neck: Embryology and Clinical Implications. Anat Sci Int. 2021;96(2):189-201.
International Society of Radiological Anatomy. Standards for Reporting Anatomical Variations in Imaging Studies. ISRA Position Statement 2020.
Chen L, Zhang W, Liu J. Prevalence of Anatomical Muscle Variations in the Suprahyoid Region: A Meta-Analysis. Eur J Radiol. 2022;147:110156.
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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.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 25, 2026. · Read our editorial policy