Evidence map›Paper›PMID 35182195›Full record

SynthesisEuropean journal of pediatrics2022

Auriculotemporal Frey syndrome not associated with surgery or diabetes: systematic review.

Céline Betti, Gregorio P Milani, Sebastiano A G Lava, Mario G Bianchetti, Gabriel Bronz, Gian P Ramelli, Barbara Goeggel Simonetti, Marcel M Bergmann

Open access · hybridAbstract readSystematic Review
In one paragraph

Synthesis in European journal of pediatrics, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
3.5field-weighted citation impact, top 7% 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

10 citing papers in PubMed, 16 citations in OpenAlex.

  1. Frey's syndrome in an infant misdiagnosed as food allergy.Allergy, asthma, and clinical immunology : official journal of the Canadian Society of Allergy and Clinical Immunology · 2026
    Article
  2. Sonographic anatomy and imaging of the great auricular nerve.Surgical and radiologic anatomy : SRA · 2025
    Review
  3. Review
  4. Article
  5. Review
  6. Article
  7. Article
  8. A tale of two syndromes: nontraumatic Frey's syndrome in a woman with Sjögren's syndrome.Clinical autonomic research : official journal of the Clinical Autonomic Research Society · 2023
    Article
  9. Article
  10. Forehead and scalp gustatory sweating after temporomandibular joint surgery: an atypical presentation of Frey's syndrome.Clinical autonomic research : official journal of the Clinical Autonomic Research Society · 2023
    Article
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

8 authors at 6 institutions in 3 countries.

Céline BettiPediatric Institute of Southern Switzerland, Ente Ospedaliero Cantonale, Ospedale San Giovanni, Bellinzona, Switzerland.
Gregorio P MilaniPediatric Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy. milani.gregoriop@gmail.com.ORCID http://orcid.org/0000-0003-3829-4254
Sebastiano A G LavaPediatric Cardiology Unit, Department of Pediatrics, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland.
Mario G BianchettiFamily Medicine, Faculty of Biomedical Sciences, Università della Svizzera Italiana, Lugano, Switzerland.
Gabriel BronzPediatric Institute of Southern Switzerland, Ente Ospedaliero Cantonale, Ospedale San Giovanni, Bellinzona, Switzerland.
Gian P RamelliPediatric Institute of Southern Switzerland, Ente Ospedaliero Cantonale, Ospedale San Giovanni, Bellinzona, Switzerland.
Barbara Goeggel SimonettiPediatric Institute of Southern Switzerland, Ente Ospedaliero Cantonale, Ospedale San Giovanni, Bellinzona, Switzerland.
Marcel M BergmannCentro Pediatrico del Mendrisiotto, Mendrisio, Switzerland.
Ente Ospedaliero Cantonale · CHGreat Ormond Street Hospital · GBUniversità della Svizzera italiana · CHUniversity Hospital of Geneva · CHUniversity of Bern · CHUniversity of Milan · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Patients who undergo salivary gland, neck, or facelift surgery or suffer from diabetes mellitus often develop Frey syndrome (also known as auriculotemporal syndrome or gustatory sweating). Frey syndrome has been occasionally reported to occur in subjects without history of surgery or diabetes but this variant of Frey syndrome has not been systematically investigated. We searched for original articles of Frey syndrome unrelated to surgery or diabetes without date and language restriction. Article selection and data extraction were performed in duplicate. Our systematic review included 76 reports describing 121 individual cases (67 males and 54 females) of Frey syndrome not associated with surgery or diabetes. The age at onset of symptoms was ≤ 18 years in 113 (93%) cases. The time to diagnosis was 12 months or more in 55 (45%) cases. On the other hand, an allergy evaluation was performed in half of the cases. A possible cause for Frey syndrome was detected in 85 (70%) cases, most frequently history of forceps birth (N = 63; 52%). The majority of the remaining 22 cases occurred after a blunt face trauma, following an auriculotemporal nerve neuritis or in association with a neurocutaneous syndrome. The cause underlying Frey syndrome was unknown in 36 cases.   Conclusion: Frey syndrome not associated with surgery or diabetes almost exclusively affects subjects in pediatric age and is uncommon and underrecognized. Most cases occur after forceps birth. There is a need to expand awareness of this pseudo-allergic reaction among pediatricians and allergists. What is Known: • Pre-auricular reddening, sweating, and warmth in response to mastication or a salivary stimulus characterize Frey syndrome. • It usually occurs after salivary gland surgery and in diabetes. What is New: • In children, Frey syndrome is rare, and most cases occur after a forceps-assisted birth. • In childhood, this condition is often erroneously attributed to food allergy.

Indexed as

Diabetes MellitusFood HypersensitivitySweating, GustatoryChildFemaleHumansMaleNeckAuriculotemporal syndromeForceps birthFrey syndromeGustatory sweatingPseudo-allergic reaction

Identifiers

PMID35182195
PMCPMC9056449
OpenAlexW4213090285

What OpenQuestion holds

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LicenceCC BY
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.