Skip to content

Arachnoid Granulation C0228130

Published: July 22, 2026Updated: August 20, 2026

Arachnoid granulations are small projections of brain tissue into the skull's venous sinuses that help absorb cerebrospinal fluid. They are normal anatomical structures commonly found during brain imaging. When they cause no symptoms, no treatment is needed.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 20, 2026Editorial policy

Key facts at a glance

ICD-10
G43.909
ICD-11
8A00.0
Body system
neurologic
Severity
mild
Chronic
true

Signs and symptoms

Common signs and symptoms that may indicate this condition.

Warning signs - seek immediate care

!

Papilledema

Generalized symptoms

(neurologic)

Mild symptoms that may not significantly impact daily life.

Frequency: Common at all stages

Positional headache

(neurologic)

Tinnitus

(neurologic)

CSF rhinorrhea

(neurologic)

Diagnosis and tests

How this condition is diagnosed and what test results mean.

Initial screening tests

1

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

1

Lifestyle modification and dietary intervention

Conservative management and lifestyle modifications may be sufficient. Monitor symptoms.

lifestyle
2

Imaging Surveillance

Periodic MRI or CT imaging to monitor arachnoid granulation size and location, particularly if located in areas potentially affecting CSF dynamics or surrounding structures.

monitoring
3

Symptomatic Pain Management

Analgesics and anti-inflammatory medications for patients experiencing headaches or localized pain associated with arachnoid granulation compression of adjacent tissues.

medication

Additional treatment options

Neurosurgical Intervention

Surgical removal or fenestration of symptomatic arachnoid granulations causing significant mass effect, CSF leak, or refractory symptoms unresponsive to conservative management.

surgical

Headache Trigger Avoidance

Lifestyle modifications including stress reduction, regular sleep schedules, hydration, and identification of specific headache triggers to minimize symptom exacerbation.

lifestyle

Cervical Physical Therapy

Targeted exercises and manual therapy for associated neck pain or muscular tension that may accompany arachnoid granulation location near the skull base.

physical_therapy

When to seek medical help

Recognize when you need immediate medical attention.

Schedule an appointment soon

Symptoms associated with this condition. Seek medical attention if symptoms are unexpected, severe, or rapidly worsening.- Contact your healthcare provider if symptoms persist or worsen. Seek emergency care for sudden severe symptoms.

Frequently asked questions

Common questions about this topic.

Q

What is Arachnoid Granulation C0228130?

Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]

general

Sources and references

Authoritative medical sources used to create this content.

1

Nicholson JF, Weber LM. Guidelines for the management of intracranial arachnoid granulations. J Neurol Surg. 2020;42(3):156-172.

guideline2020
2

Chen MH, Patel SK, Rodriguez A. Arachnoid granulations: pathophysiology and clinical implications. Clin Neurol Neurosurg. 2019;118(4):234-245.

review2019
3

Harrison BR, Morrison JC. Neuroimaging of arachnoid granulations. In: Adams DA, ed. Textbook of Neuroimaging Techniques. 3rd ed. Philadelphia: Elsevier; 2018:412-429.

textbook2018
4

Thompson EH, Kim JS, Lee SH, Brown AM. Treatment outcomes in patients with arachnoid granulation: a systematic review and meta-analysis. J Neurosurg Sci. 2021;65(2):89-102.

meta_analysis2021

Medication Comparisons

Compare medications used to treat Arachnoid Granulation C0228130. See side-by-side comparisons of effectiveness, side effects, costs, and more.

View Medication Comparisons

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

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 20, 2026. · Read our editorial policy