Nurosym Publishes Article on Post-Exertional Malaise & Vagus Nerve Treatments
Oct 15, 2026
New article explains how post-exertional malaise differs from ordinary tiredness and summarises what research does and does not yet show about the vagus nerve's role.
London, United Kingdom, October 15, 2026 /PressCable/ -- Parasym, the London-based developer of the Nurosym wearable neuromodulation device, published an educational article on September 28, 2026, titled "Vagus Nerve and Post-Exertional Malaise: Symptoms, Research & Connection." Written for a general audience, the article explains post-exertional malaise (PEM), a worsening of symptoms after physical, cognitive, or emotional activity that is commonly reported by people living with conditions like Long COVID and myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS). It also reviews current research into the vagus nerve's possible role.
Further details can be found at https://nurosym.com/blogs/articles/vagus-nerve-and-post-exertional-malaise-symptoms-research-connection
The topic affects a substantial number of people in the UK. The UK's National Institute for Health and Care Excellence (NICE) describes PEM as a worsening of symptoms that is often delayed by hours or days, disproportionate to the activity that triggered it, and slow to resolve, sometimes over days or weeks. NICE recognises PEM as a key symptom of ME/CFS in its 2021 guideline.
The new Parasym article outlines the common symptoms associated with PEM, including severe fatigue, cognitive difficulties often described as "brain fog," flu-like symptoms, muscle and joint pain, unrefreshing sleep, sensory sensitivity, and dizziness on standing. It notes that normal tiredness generally improves with rest, while PEM can broaden existing symptoms or trigger new ones. PEM can follow activities that may seem minor, such as walking, reading, using a screen, or holding a conversation, and because the worsening is often delayed, the trigger can be hard to identify.
On the research, the article describes the vagus nerve's connections between the brain and organs including the heart, lungs, and gut, and its role in the inflammatory reflex. It states that the relationship between vagus nerve function and PEM is not fully established, and also acknowledges that there is currently not enough evidence to establish vagus nerve stimulation as a way to reduce PEM symptoms. The research team at Parasym encourages readers to consult a qualified health professional about their own health needs.
"For many people with Long COVID or ME/CFS, the hardest part of post-exertional malaise is that the crash often arrives a day or two after the activity that caused it, so the connection is easy to miss," said Dr Elisabetta Burchi, lead researcher at Parasym. "We wrote this article to help people recognise that pattern, understand where the research on the vagus nerve currently stands, including its limits, and have better-informed conversations with their clinicians."
Further details can be found at https://nurosym.com/
About Parasym
Parasym Ltd is a London-based neuromodulation company that develops wearable, non-invasive auricular vagus nerve stimulation devices using its proprietary AVNT™ technology. Its devices are marketed as Nurosym in the UK, Europe, and other international markets, and as Nuropod in the United States. Parasym reports that its AVNT technology has been studied in more than 60 completed clinical studies.
*Research referenced in this article was conducted using Parasym’s neuromodulation technology under research conditions. Findings relate to specific study populations and should not be interpreted as medical claims or guaranteed individual outcomes. Nurosym is a CE-marked medical device in Europe.
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Organization: Nurosym by Parasym
Address: 18 Saint Cross Street 4th Floor, London, England EC1N 8UN, United Kingdom
Website: https://nurosym.com/
Source: PressCable
Release ID: 89206267
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