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CTRI Number  CTRI/2025/10/096122 [Registered on: 16/10/2025] Trial Registered Prospectively
Last Modified On: 16/10/2025
Post Graduate Thesis  No 
Type of Trial  Interventional 
Type of Study   Surgical/Anesthesia 
Study Design  Single Arm Study 
Public Title of Study   A study to see whether an injection near the back of the head (greater occipital nerve block) can help reduce pain and headache days in people with chronic migraine 
Scientific Title of Study   Efficacy of Greater Occipital Nerve Intervention in Managing Chronic Migraine Headache 
Trial Acronym  NIL 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Ravi Shankar Sharma 
Designation  Assistant professor  
Affiliation  AIIMS Gorakhpur 
Address  Department of Anesthesiology AIIMS Gorakhpur
Uttar pradesh
Gorakhpur
UTTAR PRADESH
273008
India 
Phone  9993116929  
Fax    
Email  drravishankarsharma4u@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  AJAY AJAY 
Designation  Academic SR Pain Medicine 
Affiliation  AIIMS Gorakhpur  
Address  Department of Anesthesiology AIIMS Gorakhpur Uttar pradesh 273008 India Gorakhpur UTTAR PRADESH 273008 India

Gorakhpur
UTTAR PRADESH
273008
India 
Phone  8053250658  
Fax    
Email  AJAY.PANWAR1307@GMAIL.COM  
 
Details of Contact Person
Public Query
 
Name  AJAY AJAY 
Designation  Academic SR Pain Medicine 
Affiliation  AIIMS Gorakhpur  
Address  Department of Anesthesiology AIIMS Gorakhpur Uttar pradesh 273008 India Gorakhpur UTTAR PRADESH 273008 India

Gorakhpur
UTTAR PRADESH
273008
India 
Phone  8053250658  
Fax    
Email  AJAY.PANWAR1307@GMAIL.COM  
 
Source of Monetary or Material Support  
Department of Anesthesiology AIIMS Gorakhpur Uttar pradesh 273008 India  
 
Primary Sponsor  
Name  AIIMS Gorakhpur  
Address  All India Institute of Medical Science Kunraghat, Gorakhpur, Uttar Pradesh 273008  
Type of Sponsor  Government medical college 
 
Details of Secondary Sponsor  
Name  Address 
NIL  NIL 
 
Countries of Recruitment     India  
Sites of Study  
No of Sites = 1  
Name of Principal Investigator  Name of Site  Site Address  Phone/Fax/Email 
Dr Ajay  AIIMS Gorakhpur  Department of Anaesthesia at first floor OT AIIMS Kunraghat, Gorakhpur, Uttar Pradesh 273008 Gorakhpur UTTAR PRADESH
Gorakhpur
UTTAR PRADESH 
08053250658

AJAY.PANWAR1307@GMAIL.COM 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional Human Ethics Committee All india Institute of Medical Sciences, Gorakhpur, India-273008  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: G437||Chronic migraine without aura,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Greater occipital nerve intervention   A single session of ultrasound-guided unilateral greater occipital nerve block will be performed on the symptomatic side. Under full aseptic precautions, a high-frequency linear ultrasound probe will be used to identify the greater occipital nerve in the fascial plane between the semispinalis capitis and the inferior oblique capitis muscles. A total of 3 mL solution containing 2 mL of 1% lignocaine with 8 mg dexamethasone will be injected perineurally around the nerve using an in-plane approach. If pain reduction is less than 30% at 2 weeks, a repeat block may be administered. All patients will receive standard migraine education and guidance on the use of acute rescue medications. 
Comparator Agent  Not applicable  Not applicable  
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  65.00 Year(s)
Gender  Both 
Details  1. Adults aged 18–65 years.
2. Diagnosed with chronic migraine according to ICHD-3 .
3. Willing to give informed consent 
 
ExclusionCriteria 
Details  1.Secondary headache disorders.
2.Local infection at injection site.
3.Coagulopathy or anticoagulant use.
4.Known allergy to lignocaine or corticosteroids.
5.Pregnancy or lactation.
6.Severe psychiatric or cognitive impairment affecting compliance. 
 
Method of Generating Random Sequence   Not Applicable 
Method of Concealment   Not Applicable 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
Reduction in mean pain intensity score after ultrasound-guided unilateral greater occipital nerve block   Baseline , 4th week 
 
Secondary Outcome  
Outcome  TimePoints 
1. Reduction in migraine frequency.
2. Change in medication quantification scale.
3.Improvement in quality of life 
Baseline and 4 weeks post-intervention 
 
Target Sample Size   Total Sample Size="38"
Sample Size from India="38" 
Final Enrollment numbers achieved (Total)= "Applicable only for Completed/Terminated trials"
Final Enrollment numbers achieved (India)="Applicable only for Completed/Terminated trials" 
Phase of Trial   Phase 2 
Date of First Enrollment (India)   13/11/2025 
Date of Study Completion (India) Applicable only for Completed/Terminated trials 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) Applicable only for Completed/Terminated trials 
Estimated Duration of Trial   Years="0"
Months="1"
Days="0" 
Recruitment Status of Trial (Global)   Not Yet Recruiting 
Recruitment Status of Trial (India)  Not Yet Recruiting 
Publication Details   N/A 
Individual Participant Data (IPD) Sharing Statement

Will individual participant data (IPD) be shared publicly (including data dictionaries)?  

Response - NO
Brief Summary  

This study evaluate the efficacy of ultrasound-guided unilateral GON block using 1% lignocaine with 8 mg dexamethasone in chronic migraine.


Methods: Thirty-eight adults (18–65 yrs) with chronic migraine will receive a single ultrasound-guided GON block on the symptomatic side between the semispinalis capitis and inferior oblique capitis muscles. 


Outcomes: Primary—Decrease in pain intensity using NRS at 4 weeks. Secondary-Reduction in migraine frequency, change in medication quantification scaleand quality of life.


Design: Single-arm, an interventional pilot study at AIIMS Gorakhpur.


 
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