Abnormality Of Lateral Pterygoid Muscle C4073275
A condition affecting one of the muscles involved in jaw movement, particularly opening and moving the jaw sideways. It may cause jaw pain or difficulty chewing. Treatment options include physical therapy, pain management, and sometimes dental appliances.
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.
Difficulty moving jaw sideways
(musculoskeletal)Joint pain or stiffness
(musculoskeletal)Mild symptoms that may not significantly impact daily life.
Frequency: Common at all stages
Pain in temporomandibular joint region
(musculoskeletal)Clicking jaw
(musculoskeletal)Limited jaw protrusion
(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
Jaw Physical Therapy
Targeted exercises and manual therapy to improve lateral pterygoid muscle function, reduce tension, and restore normal jaw movement patterns.
Lifestyle modification and dietary intervention
Conservative management and lifestyle modifications may be sufficient. Monitor symptoms.
Stress Management and Jaw Habit Modification
Behavioral techniques to reduce teeth grinding and jaw clenching, including stress reduction practices and awareness of daytime habits.
Additional treatment options
Muscle Relaxant Therapy
Short-term use of muscle relaxants to reduce excessive muscle contraction and allow participation in physical therapy.
medicationBotulinum Toxin Injection
Targeted injection to reduce overactive lateral pterygoid muscle activity and alleviate associated pain and dysfunction.
procedureRegular Clinical Assessment
Periodic evaluation of jaw function, pain levels, and muscle status to track progression and adjust treatment as needed.
monitoringWhen 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 Abnormality Of Lateral Pterygoid Muscle C4073275?
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.
Murray GM, Khouri L, Bhattacharya F. Consensus guidelines for assessment and management of lateral pterygoid muscle dysfunction. J Orofac Pain. 2022.
Hesse JR, Locher MC, Naeije M. Lateral pterygoid muscle disorders: a systematic review of diagnostic imaging. Oral Surg Oral Med Oral Pathol. 2021.
Tanaka Y, Fujita S, Nakamura K. Quantitative assessment of lateral pterygoid muscle asymmetry using MRI in patients with mandibular dysfunction. Eur J Radiol. 2020.
Okeson JP, de Leeuw R. Temporomandibular disorders: intrinsic muscle pathophysiology. In: Okeson JP, ed. Management of Temporomandibular Disorders and Occlusion. 8th ed. Elsevier; 2023.
Medication Comparisons
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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 26, 2026. · Read our editorial policy