Evidence map›Paper›PMID 33174112›Full record

ArticleClinical autonomic research : official journal of the Clinical Autonomic Research Society2021

Synergistic but separable sensory changes in postural tachycardia syndrome and chronic migraine.

Melissa M Cortez, Leah Millsap, K C Brennan

Open access · greenAbstract read
In one paragraph

Article in Clinical autonomic research : official journal of the Clinical Autonomic Research Society, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed, 1 pooled it
0.9field-weighted citation impact, top 26% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

4 citing papers in PubMed, 1 synthesis or guideline pooled it, 11 citations in OpenAlex.

  1. Human assumed central sensitization in interictal migraine: a systematic review and meta-analysis.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2026
    Pooled it
  2. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Melissa M CortezDepartment of Neurology, University of Utah, 729 Arapeen Drive, Salt Lake City, UT, 84108, USA. Melissa.Cortez@hsc.utah.edu.ORCID http://orcid.org/0000-0001-5015-441X
Leah MillsapSchool of Medicine, University of Utah, Salt Lake City, UT, USA.
K C BrennanDepartment of Neurology, University of Utah, 729 Arapeen Drive, Salt Lake City, UT, 84108, USA.
University of Utah · US

Funding

Cortical Spreading Depression in the Origins of the Migraine AttackR01NS102978 · NINDS · UNIVERSITY OF UTAH · PI BRENNAN, KEVIN CHRISTOPHER · 2017 to 2021
$1.7M
Photophobia and Pupillary Autonomic Dysfunction as Biomarkers of Post-Traumatic HeadacheK23NS105920 · NINDS · UNIVERSITY OF UTAH · PI CORTEZ, MELISSA · 2020 to 2024
$996k
NIMHD NIH HHS L32 MD009927NINDS NIH HHS K23 NS105920NINDS NIH HHS R01 NS102978
6 · The paper itself

Abstract

purposeUp to 90% of patients with postural tachycardia syndrome (PoTS) report headaches, and comorbid migraine headaches are common. Given this, pathophysiological interaction is possible, which may reveal key aspects of disease expression and treatment opportunities. We hypothesized that PoTS subjects-both with and without migraine-would show features of central sensitization, including allodynia and photophobia.

methodsEighty participants were evaluated, including 30 PoTS, 30 chronic migraine (CM), and 20 non-headache healthy controls (NH), using tilt table testing, psychophysical assessment of sensory sensitivity thresholds, and an online questionnaire to assess measures of headache burden and associated symptoms. Clinical characteristics and sensory thresholds were compared between disease groups and controls, as well as in a subgroup analysis within the PoTS group, based on headache phenotype.

resultsSensory sensitivity thresholds were significantly lower and symptom scores were higher in both the PoTS and CM groups compared to controls. However, the patterns of expression differed between PoTS and CM, with pain threshold reductions in the forearm only of PoTS subjects (non-trigeminal sensory sensitization), compared to both periorbital and forearm sites in CM. Unexpectedly, light sensitivity thresholds were significantly lower in PoTS than in both CM and NH.

conclusionsThese findings reveal an underappreciated aspect of disease burden in PoTS, and suggest network sensitization similar to, but separable from, that of migraine. The presence of both photophobia and allodynia in PoTS is reflective of exteroceptive rather than strictly interoceptive disruption, and expands our fundamental understanding of the disorder.

Indexed as

Migraine DisordersPostural Orthostatic Tachycardia SyndromeForearmHeadacheHumansAllodyniaDysautonomiaLight sensitivityOrthostatic headachePhotophobia

Identifiers

PMID33174112
PMCPMC8043970
OpenAlexW3104805232

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.