This study intends to investigate the use of high-dose Vitamin D3 plus a multivitamin in the prevention of cluster headache attacks. Participants can be enrolled anywhere in the United States that has access to one of our participating labs (for blood work - anticipated to be available in most of the USA). The study may include: * Screening: Participants may be interviewed, examined, fill out surveys, and get blood testing * Week 1: baseline period (no added medications - to establish a baseline) * Weeks 2-4: double-blinded experimental period - participants receive either 1) high-dose Vitamin D3 + multivitamin, or 2) placebo + multivitamin. Participants also fill out a survey and have blood testing. * Weeks 5-7: open-label period - ALL participants receive high-dose Vitamin D3 + multivitamin. Participants also fill out a survey and may have blood testing. Specifically, our primary outcome is the change from baseline to experimental weeks 1-3 in the frequency of cluster headache attacks between placebo and high-dose vitamin D. Specific primary and secondary outcomes are listed below.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
27
Participants will receive vitamin D+multivitamin for 3 weeks. At the end of 3 weeks they will complete an online or paper questionnaire and blood work will be done.
Participants will receive placebo+multivitamin or vitamin D+multivitamin for 3 weeks. At the end of 3 weeks they will complete an online or paper questionnaire and blood work will be done.
Participants will receive placebo+multivitamin for 3 weeks. At the end of 3 weeks they will complete an online or paper questionnaire and blood work will be done.
The University of Texas Health Science Center at Houston
Houston, Texas, United States
Change in average weekly frequency of cluster headache attacks
First primary outcome
Time frame: (baseline, average of weeks 1-3)
Change in average weekly frequency of cluster headache attacks
Second primary outcome
Time frame: (baseline, week 3)
Number of participants who had a reduction of at least 50% in the weekly frequency of cluster headache attacks between baseline and week 3
Time frame: (baseline, week 3)
Number of participants who had a reduction of at least 30% in the weekly frequency of cluster headache attacks between baseline and week 3
Time frame: baseline, week 3
Change in number of abortive medications or other treatments used per week
Time frame: baseline, week 3
Change in intensity of cluster headache attacks as assessed by numerical rating scale
Total score ranges from 0-10, and a higher score indicates a greater intensity of attacks
Time frame: baseline, week 3
Change in number of participants whose disease is 'much better' or 'very much better' as assessed by the Patient Global Impression of Improvement Scale
With the Patient Global Impression of Improvement Scale, a patient is asked to rate their disease as Very much better, Much better, A little better, No change, A little worse, Much worse, or Very much worse compared to a reference point in the past
Time frame: baseline, week 3
Change in quality of life as measured by the Cluster Headache Quality of life questionnaire
Total score ranges from 0-100, and a higher score indicates a better quality of life
Time frame: baseline, week 3
Change in duration of cluster headache attacks, in minutes
Time frame: baseline, week 3
Change in level of 25-hydroxyvitamin D
Time frame: baseline, week 3
Change in average weekly frequency of cluster headache attacks
Time frame: (baseline, week 6)
Number of participants who had a reduction of at least 50% in the weekly frequency of cluster headache attacks between baseline and week 6
Time frame: (baseline, week 6)
Number of participants who had a reduction of at least 30% in the weekly frequency of cluster headache attacks between baseline and week 6
Time frame: baseline, week 6
Change in number of abortive medications or other treatments used per week
Time frame: baseline, week 6
Change in intensity of cluster headache attacks as assessed by numerical rating scale
Total score ranges from 0-10, and a higher score indicates a greater intensity of attacks
Time frame: baseline, week 6
Change in number of participants whose disease is 'much better' or 'very much better' as assessed by the Patient Global Impression of Improvement Scale
With the Patient Global Impression of Improvement Scale, a patient is asked to rate their disease as Very much better, Much better, A little better, No change, A little worse, Much worse, or Very much worse compared to a reference point in the past
Time frame: baseline, week 6
Change in quality of life as measured by the Cluster Headache Quality of life questionnaire
Total score ranges from 0-100, and a higher score indicates a better quality of life
Time frame: baseline, week 6
Change in duration of cluster headache attacks, in minutes
Time frame: baseline, week 6
Change in level of 25-hydroxyvitamin D
Time frame: baseline, week 6
Number of days until end of the cluster period after the start of treatment (i.e., the time to the end of an episodic cluster cycle)
Time frame: upto 3 weeks from treatment
Change in average weekly frequency of cluster headache attacks
Time frame: (baseline, week 2)
Change in average weekly frequency of cluster headache attacks
Time frame: (baseline, week 1)
Change in intensity of cluster headache attacks as assessed by numerical rating scale
Total score ranges from 0-10, and a higher score indicates a greater intensity of attacks
Time frame: baseline, week 2
Change in intensity of cluster headache attacks as assessed by numerical rating scale
Total score ranges from 0-10, and a higher score indicates a greater intensity of attacks
Time frame: baseline, week 1
Change in duration of cluster headache attacks, in minutes
Time frame: baseline, week 2
Change in duration of cluster headache attacks, in minutes
Time frame: baseline, week 1
Change in number of abortive medications or other treatments used per week
Time frame: baseline, week 2
Change in number of abortive medications or other treatments used per week
Time frame: baseline, week 1
Change in quality of life as measured by the Cluster Headache Quality of life questionnaire
Total score ranges from 0-100, and a higher score indicates a better quality of life
Time frame: baseline, week 2
Change in quality of life as measured by the Cluster Headache Quality of life questionnaire
Total score ranges from 0-100, and a higher score indicates a better quality of life
Time frame: baseline, week 1
Change in level of 25-hydroxyvitamin D
Time frame: baseline, week 2
Change in level of 25-hydroxyvitamin D
Time frame: baseline, week 1
Change in level of calcium
Time frame: baseline, week 3
Change in level of calcium
Time frame: baseline, week 6
Change in level of calcium
Time frame: baseline, week 2
Change in level of calcium
Time frame: baseline, week 1
Change in level of phosphate
Time frame: baseline, week 3
Change in level of phosphate
Time frame: baseline, week 6
Change in level of phosphate
Time frame: baseline, week 1
Change in level of phosphate
Time frame: baseline, week 2
Change in level of parathyroid hormone
Time frame: baseline, week 3
Change in level of parathyroid hormone
Time frame: baseline, week 6
Change in level of parathyroid hormone
Time frame: baseline, week 1
Change in level of parathyroid hormone
Time frame: baseline, week 2
Change in level of creatinine
Time frame: baseline, week 3
Change in level of creatinine
Time frame: baseline, week 6
Change in level of creatinine
Time frame: baseline, week 1
Change in level of creatinine
Time frame: baseline, week 2
Change in number of participants whose disease is 'much better' or 'very much better' as assessed by the Patient Global Impression of Improvement Scale
With the Patient Global Impression of Improvement Scale, a patient is asked to rate their disease as Very much better, Much better, A little better, No change, A little worse, Much worse, or Very much worse compared to a reference point in the past
Time frame: baseline, week 2
Change in number of participants whose disease is 'much better' or 'very much better' as assessed by the Patient Global Impression of Improvement Scale
With the Patient Global Impression of Improvement Scale, a patient is asked to rate their disease as Very much better, Much better, A little better, No change, A little worse, Much worse, or Very much worse compared to a reference point in the past
Time frame: baseline, week 1
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