ClinicalTrials.gg
Not yet recruitingNCT07743814Updated Aug 4, 2026

EFFECT OF ANODAL TRANSCRANIAL DIRECT CURRENT STIMULATION (tDCS) OF PRIMARY MOTOR CORTEX ON HEADACHE FREQUENCY IN PATIENTS WITH CHRONIC MIGRAINE

A Phase 3 interventional study of Transcranial Direct Current stimulation and Transcranial Direct Current stimulation in Chronic Migraine Headache and Chronic Migraine, Headache, sponsored by Dr. Ram Manohar Lohia Hospital. Not yet recruiting at 1 site in India. Open to participants aged 18 Years to 60 Years. Per ClinicalTrials.gov, last updated 2026-08-04.

Sponsored by Dr. Ram Manohar Lohia Hospital · Phase 3, Interventional, and Health services research

Phase
Phase 3
Study type
Interventional
Enrollment
32
Allocation
Randomized
Ages
18 Years to 60 Years
Sex
All
01

Study summary

Migraine is a common, heterogeneous neurological disorder affecting approximately 10-15% of the global population and is the third most prevalent disease worldwide. A wide range of pharmacological agents is available for migraine prophylaxis, with treatment selection generally guided by the patient's clinical profile, associated comorbidities, and individual tolerability. However, the effectiveness of preventive medications is often limited by adverse effects, leading to poor treatment adherence and discontinuation. Consequently, non-pharmacological interventions, particularly neuromodulation techniques, have gained increasing attention as potential therapeutic options for chronic migraine.

Transcranial direct current stimulation (tDCS) is a non-invasive neuromodulation technique that has demonstrated efficacy in modulating refractory pain in patients with chronic migraine, fibromyalgia, spinal cord injury, and trigeminal neuralgia. In addition, it has shown therapeutic benefits in several neurological and psychiatric disorders, including depression, stroke, epilepsy, and Parkinson's disease. The present study aims to evaluate the efficacy of anodal tDCS applied over the primary motor cortex as an adjunctive therapy for reducing headache frequency in patients with chronic migraine.

A total of 32 participants with chronic migraine will be enrolled and randomized using block randomization with a block size of four, stratified according to the presence or absence of medication-overuse headache (MOH), through an online randomization generator. Participants will be allocated to receive either active or sham tDCS. Before randomization, all eligible patients will maintain a baseline headache diary for four weeks while continuing their existing prophylactic medications. Thereafter, they will undergo three 20-minute stimulation sessions administered during weeks 1, 5, and 9. Treatment outcomes will be evaluated at weeks 5, 9, and 12 using headache diary records and predefined objective assessment tools.

02

Conditions studied

  • Chronic Migraine Headache
  • Chronic Migraine, Headache

Keywords

  • tDCS
  • Chronic Migraine
  • Neuromodulation
  • Chronic Headache
  • Primary motor cortex
03

In context

Headache

762 studies on the registry are indexed under Headache; 134 are open to participants now.

This study's planned enrollment of 32 is below the median of 65 across 560 interventional studies indexed under Headache.

Browse Headache studies →

Lead sponsor

Dr. Ram Manohar Lohia Hospital is the lead sponsor of 9 studies on the registry; 3 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 60 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Patients aged 18-60 years diagnosed with chronic migraine as per ICHD-3.
  2. Patients who were on a minimum of one concomitant preventive medication for not less than three months duration and a dose that was stable for at least one month prior to randomization.
  3. Willingness to provide and maintain a headache diary.

Exclusion criteria

Exclusion Criteria:

  1. Patients with neurologic diseases such as tumours, seizures, dementia, meningitis, stroke, etc.
  2. Patients with barbiturate/opioid overuse or complications due to NSAID overuse.
  3. Patients failing to complete headache diary for more than 6 non-consecutive days during baseline.
  4. Illiterate patients without a caregiver to maintain the diary.
  5. Patients with pacemakers, cochlear implants.
  6. Pregnant women.
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Phase
Phase 3
Primary purpose
Health services research
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
32 participants (estimated)

Study arms

  • Experimental
    Anodal TDCS Arm (will receive true tDCS)

    Will receive true Anodal tDCS

    Device: Transcranial Direct Current stimulation

  • Sham comparator
    Sham tDCS Arm (will receive sham stimulation)

    Will receive sham tDCS stimulation

    Device: Transcranial Direct Current stimulation

Interventions

  • DeviceTranscranial Direct Current stimulation

    Patients in group A will receive true anodal stimulation

  • DeviceTranscranial Direct Current stimulation

    Patients in group B will receive Sham stimulation

06

What researchers measure

Primary outcomes

  1. Change in frequency of moderate-severe headache days (week 12 vs baseline).

    Change in the number of monthly moderate-to-severe headache days from baseline to Week 12, as recorded in the participant headache diary.

    Time frame: 12 weeks

Secondary outcomes

  1. Change in migraine days (week 12 vs baseline).

    Change in the frequency of monthly migraine days from baseline to Week 12, as recorded in the participant headache diary.

    Time frame: 12 weeks

  2. 50% responder rate

    The number of patients having a 50% reduction in migraine days per month in both groups was calculated at week 12

    Time frame: 12 weeks

  3. Change in headache severity (week 12 vs baseline).

    The change in headache severity will be assessed at week 12 from baseline in terms of visual analogue score (0-3)

    Time frame: 12 weeks

  4. Change in number of days with acute medication use (week 12 vs baseline)

    Change in the number of days requiring acute migraine medication use per month from baseline to Week 12, as recorded in the participant headache diary.

    Time frame: 12 weeks

  5. Change in PHQ-9 scores (week 12 vs baseline)

    Change in Patient Health Questionnaire-9 (PHQ-9) scores from baseline to Week 12

    Time frame: 12 weeks

  6. Change in MIDAS score (week 12 vs baseline)

    Change in Migraine Disability Assessment (MIDAS) scores from baseline to Week 12, assessing changes in migraine-related disability.

    Time frame: 12 weeks

  7. Change in HIT - 6 scores (week 12 vs baseline)

    Change in Headache Impact Test-6 (HIT-6) scores from baseline to Week 12, assessing the impact of headache on daily functioning and health-related quality of life.

    Time frame: 12 weeks

  8. Change in Migraine specific Quality of Life (week 12 vs baseline)

    Change in Migraine-Specific Quality of Life (MSQ) scores from baseline to Week 12, assessing changes in migraine-related quality of life.

    Time frame: 12 weeks

  9. Safety Outcome - Adverse events reported by the patients after each session of tDCS

    Incidence and severity of adverse events reported by participants following each transcranial direct current stimulation (tDCS) session, monitored throughout the study period.

    Time frame: 12 weeks

07

Study locations

1 site
08

References and documents

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: Yes — IPD collected throughout the trial will be available from the Principle Investigator upon reasonable request.

Supporting information: Study protocol, Statistical analysis plan, Informed consent form

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Start is estimated for Aug 2026; primary completion for Jan 2027, 5 months later.

Of 30 phase 3 interventional studies under Headache, half reached primary completion within 18 months of starting (the median), counting those still running; a quarter within 13 and three quarters within 47. This study's planned 5 months is below that.

How these figures are worked out, and which studies are left out of them.

Registered
Jul 29, 2026
First posted
Aug 4, 2026
StartEst.
Aug 1, 2026
Primary completionEst.
Jan 31, 2027
CompletionEst.
Jan 31, 2027
Last update
Aug 4, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Aug 4, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07743814
Lead sponsor
Dr. Ram Manohar Lohia Hospital
Responsible party
Dr Ashish Kumar Duggal (Professor, Department of Neurology, ABVIMS and Dr RML Hospital, New Delhi, Dr. Ram Manohar Lohia Hospital) — Principal investigator
First posted
Aug 4, 2026
Start date
Aug 1, 2026 (estimated)
Primary completion
Jan 31, 2027 (estimated)
Completion
Jan 31, 2027 (estimated)
Last update
Aug 4, 2026

Study contacts

Ashish Duggal, DM (Neurology)
Contact
ashishduggal2005@gmail.com
+919810523332
Ketan Bhatnagar, Pursuing DM Neurology
Contact
Ketanbhatnagar2024@gmail.com
+917062874305
Ashish K Duggal, DM Neurology
principal investigator · ABVIMS and Dr RML Hospital, New Delhi

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Jul 2026. You cannot join it, but the record below documents what was studied.

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