Mapping cognitive impairment and fatigue after mild to moderate COVID-19

Cognitive Impairment and Fatigue After Mild to Moderate COVID-19 - Relation to Biomarkers and Neuronal Network Functions

Danderyd Hospital · NCT06042530

This study is trying to see if people who had mild to moderate COVID-19 and are still feeling tired or having trouble thinking can be helped by understanding their symptoms and comparing them to those who didn't have long-term issues.

Quick facts

Study typeObservational
Enrollment100 (estimated)
Ages18 Years to 65 Years
SexAll
SponsorDanderyd Hospital (other)
Locations1 site (Stockholm)
Trial IDNCT06042530 on ClinicalTrials.gov

What this trial studies

This project aims to investigate cognitive and visual dysfunctions in individuals experiencing long-term symptoms following a mild to moderate COVID-19 infection. It will assess neuropsychological performance and explore potential underlying mechanisms, including the role of depression and sleep disorders. The study will compare cognitive problems in affected individuals to non-symptomatic controls and examine relationships between self-reported symptoms, cognitive test results, and biomarkers. Various assessments, including neuropsychological evaluations, optometric investigations, and imaging techniques, will be utilized.

Who should consider this trial

Good fit: Ideal candidates are individuals aged 18 and older who have experienced persistent cognitive impairment or fatigue for more than three months following a verified mild to moderate COVID-19 infection.

Not a fit: Patients with severe mental illnesses, neurodegenerative diseases, or significant visual impairments may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could enhance understanding of cognitive and fatigue-related issues in post-COVID patients, leading to better management strategies.

How similar studies have performed: While studies on post-COVID conditions are emerging, this specific approach focusing on cognitive and visual dysfunctions is relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

• Persons 18 years and older with a history of (\> 3 months) verified COVID-19 (PCR / rapid test / antibody) or an infection that is most likely a SARS-CoV-2 infection (e.g., a close relative had a verified infection that coincided in time with the patient's illness) and who have persistent problems with cognitive impairment or fatigue affecting the return to previous activities / employment.

Exclusion Criteria:

* Dominant recurrent and / or fluctuating symptoms of infection, circulatory, respiratory or cardiac problems.
* Co-morbidities that may cause cognitive impairment such as neurodegenerative disease, substance abuse, severe mental illness (eg. schizophrenia, mano depressive disorder) or severe depression.
* Not fluent in Swedish, as test and self-reports rely on good mastering of the Swedish language.
* Severe premorbid visual impairment.

Additionally for the fMRI study:

* Not verified SARS-CoV-2 infection with a Polymerase Chain Reaction (PCR) / rapid test / antibody review
* Traumatic brain injury
* Neuropsychiatric disease such as diagnosed ADHD or autism
* Younger than 25 years or older than 55 years (to avoid the risk that the brain is not fully developed or that there is a risk of age-related changes in the brain).
* MRI contraindications (such as metal objects in the body, fear of cramped spaces, pregnancy, body weight over 130 kg), and left-handedness (to increase the likelihood of uniform topological lateralization in the cohort).

Where this trial is running

Stockholm

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Post COVID-19 Condition, Cognitive Impairment, Fatigue, Mental, cognition, fatigue, COVID-19, neuropsychology, biomarkers

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.