---
title: "Post-Infectious Cerebellitis: Etiology, Presentation, Treatment, and Outcomes — Systematic Review"
id: "pubmed-42649322"
canonical_url: "https://medichelpline.com/clinical-feed/pubmed-42649322"
content_type: "clinical_feed_article"
specialty: "Critical Care"
source_name: "PubMed / NCBI"
source_url: "https://pubmed.ncbi.nlm.nih.gov/42649322/"
doi: "10.1007/s12311-026-02074-3"
published_at: "2026-08-27T00:00:00.000Z"
evidence_level: "Systematic Review"
license: "CC-BY-NC-4.0 / Informational Use"
---
# Post-Infectious Cerebellitis: Etiology, Presentation, Treatment, and Outcomes — Systematic Review
## Provenance & Clinical Metadata
- **Canonical URL:** https://medichelpline.com/clinical-feed/pubmed-42649322
- **Specialty:** [Critical Care](https://medichelpline.com/clinical-feed/critical-care.md)
- **Primary Source:** PubMed / NCBI
- **Source URL:** [Original Journal Publication](https://pubmed.ncbi.nlm.nih.gov/42649322/)
- **DOI:** [10.1007/s12311-026-02074-3](https://doi.org/10.1007%2Fs12311-026-02074-3)
- **Published At:** 2026-08-27T00:00:00.000Z
- **Evidence Rating:** Systematic Review
## Executive GIST (TL;DR)
- This systematic review synthesizes patient-level data on **post-infectious cerebellitis**, an immune-mediated cerebellar inflammatory syndrome occurring after infection or, rarely, vaccination. - A PRISMA-guided search screened 899 records; after eligibility assessment 47 studies (case reports, case series, cohorts) were included for qualitative synthesis. - Patient-level data were pooled for 73 individuals: mean age 24.5 years (range 7 months–74 years); 40 pediatric and 28 adult patients; sex reported in 70 patients with 51 (72.9%) male. - Cases were categorized by severity: 34 (46.6%) as acute cerebellar ataxia (ACA), 26 (35.6%) as acute cerebellitis (AC), and 13 (17.8%) as acute fulminant cerebellitis (AFC) based on neuroimaging and life-threatening features. - Recovery rates by subtype reported in pooled data: complete recovery in 58.8% of ACA, 69.2% of AC, and 69.2% of AFC cases. One death occurred in the AFC subgroup. - Identified triggers: **SARS-CoV-2** (24/73, 32.9%) was most frequent, followed by no pathogen identified (18/73, 24.7%), varicella-zoster virus (8/73, 11.0%), Epstein-Barr virus (5/73, 6.8%), and influenza (5/73, 6.8%). - Treatments used included **corticosteroids** (54/73, 74.0%), antivirals (35/73, 47.9%), IVIG (19/73, 26.0%), and plasma exchange for refractory cases. - Overall outcomes in the pooled cohort: complete recovery in 47/73 (64.4%), partial recovery or residual deficit in 15/73 (20.5%), outcome not stated in 10/73 (13.7%), and one death (1.4%) — COVID-19-associated necrotizing encephalopathy in an adult. - The evidence base is heterogeneous and predominantly composed of case reports and small series; prognosis is generally favorable with corticosteroid-based immunotherapy, but outcomes vary by etiology and severity subgroup. - The review notes the limited quality and quantity of higher-level evidence and emphasizes heterogeneity across triggers, age groups, and clinical severity.
## Clinical Analysis & Structured Key Points
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Affiliations Expand ### Affiliations * 1 Department of Neurology, National Institute of Mental Health and Neurosciences (NIMHANS), Hosur Road, Bengaluru, 560029, Karnataka, India. nishanth4may4@gmail.com. * 2 Department of Neurology, National Institute of Mental Health and Neurosciences (NIMHANS), Hosur Road, Bengaluru, 560029, Karnataka, India. * PMID: **42649322** * DOI: [ 10.1007/s12311-026-02074-3 ](https://doi.org/10.1007/s12311-026-02074-3) Item in Clipboard Review # Post-Infectious Cerebellitis: A Systematic Review of Aetiology, Clinical Presentation, Treatment, and Outcomes Nishanth Gowda et al. Cerebellum. 2026. Show details Display options Display options Format Abstract PubMed PMID Cerebellum Actions * [ Search in PubMed ](https://pubmed.ncbi.nlm.nih.gov/?term=%22Cerebellum%22%5Bjour%5D&sort=date&sort_order=desc) * [ Search in NLM Catalog ](https://www.ncbi.nlm.nih.gov/nlmcatalog?term=%22Cerebellum%22%5BTitle+Abbreviation%5D) * [ Add to Search ](https://pubmed.ncbi.nlm.nih.gov/42649322/) . 2026 Aug 27;25(5):134. doi: 10.1007/s12311-026-02074-3. ### Authors [Nishanth Gowda](https://pubmed.ncbi.nlm.nih.gov/?term=Gowda+N&cauthor_id=42649322)[ 1 ](https://pubmed.ncbi.nlm.nih.gov/42649322/#short-view-affiliation-1 "Department of Neurology, National Institute of Mental Health and Neurosciences \(NIMHANS\), Hosur Road, Bengaluru, 560029, Karnataka, India. nishanth4may4@gmail.com."), [Shravan Harish](https://pubmed.ncbi.nlm.nih.gov/?term=Harish+S&cauthor_id=42649322)[ 2 ](https://pubmed.ncbi.nlm.nih.gov/42649322/#short-view-affiliation-2 "Department of Neurology, National Institute of Mental Health and Neurosciences \(NIMHANS\), Hosur Road, Bengaluru, 560029, Karnataka, India."), [Jigil Joy](https://pubmed.ncbi.nlm.nih.gov/?term=Joy+J&cauthor_id=42649322)[ 2 ](https://pubmed.ncbi.nlm.nih.gov/42649322/#short-view-affiliation-2 "Department of Neurology, National Institute of Mental Health and Neurosciences \(NIMHANS\), Hosur Road, Bengaluru, 560029, Karnataka, India."), [Gagan Tej](https://pubmed.ncbi.nlm.nih.gov/?term=Tej+G&cauthor_id=42649322)[ 2 ](https://pubmed.ncbi.nlm.nih.gov/42649322/#short-view-affiliation-2 "Department of Neurology, National Institute of Mental Health and Neurosciences \(NIMHANS\), Hosur Road, Bengaluru, 560029, Karnataka, India.") ### Affiliations * 1 Department of Neurology, National Institute of Mental Health and Neurosciences (NIMHANS), Hosur Road, Bengaluru, 560029, Karnataka, India. nishanth4may4@gmail.com. * 2 Department of Neurology, National Institute of Mental Health and Neurosciences (NIMHANS), Hosur Road, Bengaluru, 560029, Karnataka, India. * PMID: **42649322** * DOI: [ 10.1007/s12311-026-02074-3 ](https://doi.org/10.1007/s12311-026-02074-3) Item in Clipboard Cite Display options Display options Format Abstract PubMed PMID ## Abstract Post-infectious cerebellitis is an immune-mediated cerebellar inflammatory syndrome that follows a preceding infection (or, rarely, vaccination) after a latent interval. It spans a spectrum from benign post-infectious/acute cerebellar ataxia (ACA) through more severe acute cerebellitis (AC) with leptomeningeal enhancement and mass effect, to rare, life-threatening acute fulminant cerebellitis (AFC) with hydrocephalus risk. Evidence is largely limited to individual case reports and small case series, and no prior review has systematically pooled patient-level data across etiologies. A PRISMA-guided systematic review screened 899 records identified through electronic database searches, citation tracking, and supplementary bibliography searches. After duplicate removal and eligibility assessment, 47 studies (case reports, case series, and cohort studies) were included in the qualitative synthesis. Patient-level data from 73 individuals were extracted for quantitative pooling. Pooled patients had a mean age of 24.5 years (range 7 months-74 years; 40 pediatric, 28 adult); of 70 patients with sex reported, 51 (72.9%) were male. Based on neuroimaging findings and the presence of life-threatening features, 34 patients (46.6%) were classified as acute cerebellar ataxia (ACA), 26 (35.6%) as acute cerebellitis (AC), and 13 (17.8%) as acute fulminant cerebellitis (AFC), with complete recovery in 58.8%, 69.2%, and 69.2% of each subtype, respectively, and the cohort's only death occurring in the AFC subgroup. SARS-CoV-2 (n = 24, 32.9%) was the most frequently identified trigger, followed by patients with no pathogen identified (n = 18, 24.7%), varicella-zoster virus (n = 8, 11.0%), Epstein-Barr virus (n = 5, 6.8%), and influenza (n = 5, 6.8%). Corticosteroids were the most common treatment (54/73, 74.0%), followed by antivirals (35/73, 47.9%) and IVIG (19/73, 26.0%); plasma exchange was given for refractory cases. Complete recovery occurred in 47/73 patients (64.4%), partial recovery/residual deficit in 15/73 (20.5%), outcome was not stated for 10/73 (13.7%), and one death (1.4%) was recorded (COVID-19-associated necrotizing encephalopathy) - the only fatality, occurring in an adult. Post-infectious cerebellitis is a heterogeneous, largely immune-mediated syndrome with a generally favorable prognosis after corticosteroid-based immunotherapy, though outcomes and evidence quality vary by etiology and severity subgroup. **Keywords:** Acute cerebellar ataxia; Acute cerebellitis; Corticosteroids; Immune-mediated cerebellar disease; Neuroimaging; Post-infectious cerebellitis; SARS-CoV-2; Systematic review. © 2026. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature. [PubMed Disclaimer](https://pubmed.ncbi.nlm.nih.gov/disclaimer/) ## Conflict of interest statement Declarations. Ethics Approval: Ethical approval was not required for this study because it is a systematic review of previously published studies involving publicly available data. Consent for Publication: Not applicable. Consent to Participate: Not applicable. Competing Interests: The authors declare no competing interests. ## References 1. 1. Mitoma H, Manto M, Hampe CS. Immune-mediated Cerebellar Ataxias: Practical Guidelines and Therapeutic Challenges. Curr Neuropharmacol. 2018;17(1):33–58. . - [DOI](https://doi.org/10.2174/1570159x16666180917105033) 2. 1. Mitoma H, Adhikari K, Aeschlimann D, Chattopadhyay P, Hadjivassiliou M, Hampe CS, et al. Consensus Paper: Neuroimmune Mechanisms of Cerebellar Ataxias. Cerebellum. 2016;15(2):213–32. . - [DOI](https://doi.org/10.1007/s12311-015-0664-x) - [PubMed](https://pubmed.ncbi.nlm.nih.gov/25823827/) - [PMC](https://pmc.ncbi.nlm.nih.gov/articles/4591117/) 3. 1. Pruitt AA. Infections of the Cerebellum. Neurol Clin. 2014;32(4):1117–31. . .009 PubMed PMID: 25439297. - [DOI](https://doi.org/10.1016/j.ncl.2014.07) - [PubMed](https://pubmed.ncbi.nlm.nih.gov/25439297/) 4. 1. Connolly AM, Dodson WE, Prensky AL, Rust RS. Course and outcome of acute cerebellar ataxia. Ann Neurol. 1994;35(6):673–9. . - [DOI](https://doi.org/10.1002/ana.410350607) - [PubMed](https://pubmed.ncbi.nlm.nih.gov/8210223/) 5. 1. Nussinovitch M, Prais D, Volovitz B, Shapiro R, Amir J. Post-Infectious Acute Cerebellar Ataxia in Children. Clin Pediatr (Phila). 2003;42:581–4. . - [DOI](https://doi.org/10.1177/000992280304200702) - [PubMed](https://pubmed.ncbi.nlm.nih.gov/14552515/) Show all 53 references ## Publication types * Systematic Review Actions * [ Search in PubMed ](https://pubmed.ncbi.nlm.nih.gov/?term=%22Systematic+Review%22%5Bpt%5D&sort=date&sort_order=desc) * [ Search in MeSH ](https://www.ncbi.nlm.nih.gov/mesh?term=Systematic+Review) * [ Add to Search ](https://pubmed.ncbi.nlm.nih.gov/42649322/) * Review Actions * [ Search in PubMed ](https://pubmed.ncbi.nlm.nih.gov/?term=%22Review%22%5Bpt%5D&sort=date&sort_order=desc) * [ Search in MeSH ](https://www.ncbi.nlm.nih.gov/mesh?term=Review) * [ Add to Search ](https://pubmed.ncbi.nlm.nih.gov/42649322/) ## MeSH terms * Adolescent Actions * [ Search in PubMed ](https://pubmed.ncbi.nlm.nih.gov/?term=%22Adolescent%22%5BMeSH%5D&sort=date&sort_order=desc) * [ Search in MeSH ](https://www.ncbi.nlm.nih.gov/mesh?term=Adolescent) * [ Add to Search ](https://pubmed.ncbi.nlm.nih.gov/42649322/) * Adult Actions * [ Search in PubMed ](https://pubmed.ncbi.nlm.nih.gov/?term=%22Adult%22%5BMeSH%5D&sort=date&sort_order=desc) * [ Search in MeSH ](https://www.ncbi.nlm.nih.gov/mesh?term=Adult) * [ Add to Search ](https://pubmed.ncbi.nlm.nih.gov/42649322/) * Aged Actions * [ Search in PubMed ](https://pubmed.ncbi.nlm.nih.gov/?term=%22Aged%22%5BMeSH%5D&sort=date&sort_order=desc) * [ Search in MeSH ](https://www.ncbi.nlm.nih.gov/mesh?term=Aged) * [ Add to Search ](https://pubmed.ncbi.nlm.nih.gov/42649322/) * COVID-19* / complications Actions * [ Search in PubMed ](https://pubmed.ncbi.nlm.nih.gov/?term=%22COVID-19%2Fcomplications%22%5BMAJR%5D&sort=date&sort_order=desc) * [ Search in MeSH ](https://www.ncbi.nlm.nih.gov/mesh?term=COVID-19) * [ Add to Search ](https://pubmed.ncbi.nlm.nih.gov/42649322/) * Cerebellar Diseases* / etiology Actions * [ Search in PubMed ](https://pubmed.ncbi.nlm.nih.gov/?term=%22Cerebellar+Diseases%2Fetiology%22%5BMAJR%5D&sort=date&sort_order=desc) * [ Search in MeSH ](https://www.ncbi.nlm.nih.gov/mesh?term=Cerebellar+Diseases) * [ Add to Search ](https://pubmed.ncbi.nlm.nih.gov/42649322/) * Cerebellar Diseases* / therapy Actions * [ Search in PubMed ](https://pubmed.ncbi.nlm.nih.gov/?term=%22Cerebellar+Diseases%2Ftherapy%22%5BMAJR%5D&sort=date&sort_order=desc) * [ Search in MeSH ](https://www.ncbi.nlm.nih.gov/mesh?term=Cerebellar+Diseases) * [ Add to Search ](https://pubmed.ncbi.nlm.nih.gov/42649322/) * Child Actions * [ Search in PubMed ](https://pubmed.ncbi.nlm.nih.gov/?term=%22Child%22%5BMeSH%5D&sort=date&sort_order=desc) * [ Search in MeSH ](https://www.ncbi.nlm.nih.gov/mesh?term=Child) * [ Add to Search ](https://pubmed.ncbi.nlm.nih.gov/42649322/) * Child, Preschool Actions * [ Search in PubMed ](https://pubmed.ncbi.nlm.nih.gov/?term=%22Child%2C+Preschool%22%5BMeSH%5D&sort=date&sort_order=desc) * [ Search in MeSH ](https://www.ncbi.nlm.nih.gov/mesh?term=Child%2C+Preschool) * [ Add to Search ](https://pubmed.ncbi.nlm.nih.gov/42649322/) * Coronavirus Infections* / complications Actions * [ Search in PubMed ](https://pubmed.ncbi.nlm.nih.gov/?term=%22Coronavirus+Infections%2Fcomplications%22%5BMAJR%5D&sort=date&sort_order=desc) * [ Search in MeSH ](https://www.ncbi.nlm.nih.gov/mesh?term=Coronavirus+Infections) * [ Add to Search ](https://pubmed.ncbi.nlm.nih.gov/42649322/) * Female Actions * [ Search in PubMed ](https://pubmed.ncbi.nlm.nih.gov/?term=%22Female%22%5BMeSH%5D&sort=date&sort_order=desc) * [ Search in MeSH ](https://www.ncbi.nlm.nih.gov/mesh?term=Female) * [ Add to Search ](https://pubmed.ncbi.nlm.nih.gov/42649322/) * Humans Actions * [ Search in PubMed ](https://pubmed.ncbi.nlm.nih.gov/?term=%22Humans%22%5BMeSH%5D&sort=date&sort_order=desc) * [ Search in MeSH ](https://www.ncbi.nlm.nih.gov/mesh?term=Humans) * [ Add to Search ](https://pubmed.ncbi.nlm.nih.gov/42649322/) * Male Actions * [ Search in PubMed ](https://pubmed.ncbi.nlm.nih.gov/?term=%22Male%22%5BMeSH%5D&sort=date&sort_order=desc) * [ Search in MeSH ](https://www.ncbi.nlm.nih.gov/mesh?term=Male) * [ Add to Search ](https://pubmed.ncbi.nlm.nih.gov/42649322/) * Post-Infectious Disorders Actions * [ Search in PubMed ](https://pubmed.ncbi.nlm.nih.gov/?term=%22Post-Infectious+Disorders%22%5BMeSH%5D&sort=date&sort_order=desc) * [ Search in MeSH ](https://www.ncbi.nlm.nih.gov/mesh?term=Post-Infectious+Disorders) * [ Add to Search ](https://pubmed.ncbi.nlm.nih.gov/42649322/) * SARS-CoV-2 Actions * [ Search in PubMed ](https://pubmed.ncbi.nlm.nih.gov/?term=%22SARS-CoV-2%22%5BMeSH%5D&sort=date&sort_order=desc) * [ Search in MeSH ](https://www.ncbi.nlm.nih.gov/mesh?term=SARS-CoV-2) * [ Add to Search ](https://pubmed.ncbi.nlm.nih.gov/42649322/) * Treatment Outcome Actions * [ Search in PubMed ](https://pubmed.ncbi.nlm.nih.gov/?term=%22Treatment+Outcome%22%5BMeSH%5D&sort=date&sort_order=desc) * [ Search in MeSH ](https://www.ncbi.nlm.nih.gov/mesh?term=Treatment+Outcome)
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