When COVID Does Not Go Away
The acute infection cleared weeks or months ago, but you are not the same. Crushing fatigue, brain fog, breathlessness, heart palpitations, muscle pain, and a body that no longer responds to exercise the way it used to. Welcome to Long COVID – a condition that has affected millions worldwide and that I see regularly at our practice in Zürich Seefeld.
Long COVID (also called post-COVID syndrome or PASC) is defined as symptoms persisting or developing more than 12 weeks after the initial SARS-CoV-2 infection. It can affect anyone – regardless of age, fitness level, or severity of the initial illness.
Common Symptoms of Long COVID
The symptom profile is remarkably diverse, affecting multiple organ systems simultaneously. The most frequently reported symptoms include debilitating fatigue and post-exertional malaise (symptoms worsening after physical or mental activity), cognitive dysfunction (brain fog, poor concentration, memory problems), breathlessness and chest tightness, heart palpitations and exercise intolerance, muscle and joint pain, headaches, sleep disturbances, dizziness and orthostatic intolerance, gastrointestinal symptoms, anxiety and depression, and altered sense of smell or taste.
What Causes Long COVID?
Research is ongoing, but several mechanisms have been identified:
Persistent viral reservoirs: Fragments of SARS-CoV-2 or active viral particles may persist in tissues, maintaining chronic immune activation.
Autoimmunity: COVID-19 can trigger autoantibody production, and many Long COVID patients develop autoimmune-like responses.
Chronic inflammation: Sustained elevation of inflammatory cytokines and markers is common in Long COVID patients.
Endothelial dysfunction and microclotting: Damage to blood vessel linings and the formation of microclots can impair oxygen delivery to tissues, contributing to fatigue and cognitive symptoms.
Mitochondrial dysfunction: Impaired cellular energy production may explain the profound fatigue and exercise intolerance.
Autonomic nervous system dysfunction: Dysautonomia, including POTS (Postural Orthostatic Tachycardia Syndrome), is frequently observed after COVID.
Gut microbiome disruption: SARS-CoV-2 affects the gut, and persistent microbiome changes may contribute to ongoing symptoms.
Our Diagnostic Approach
I conduct a thorough assessment including detailed symptom mapping and timeline, comprehensive blood work (inflammatory markers, autoantibodies, thyroid function, iron studies, vitamin D, B12), cardiovascular assessment (ECG, sometimes echocardiography or Holter monitoring), assessment for orthostatic intolerance, pulmonary function evaluation, and gut health assessment. The goal is to identify which mechanisms are most active in your specific case.
What We Do: A Personalised Recovery Plan
Pacing and energy management: This is the single most important intervention. Post-exertional malaise must be respected – pushing through makes Long COVID worse. I help you establish an activity baseline and gradually increase capacity.
Anti-inflammatory support: Omega-3 fatty acids, curcumin, quercetin, and an anti-inflammatory diet to reduce the chronic inflammatory state.
Mitochondrial support: CoQ10, NAD+ precursors (NMN/NR), alpha-lipoic acid, and magnesium to support cellular energy production.
Autonomic nervous system rehabilitation: For patients with dysautonomia, graduated reconditioning protocols, compression garments, hydration strategies, and sometimes medication.
Gut restoration: Probiotics, gut barrier support, and dietary modifications to restore microbiome balance.
Micronutrient optimisation: Correcting deficiencies in vitamin D, iron, B vitamins, zinc, and selenium that are common post-COVID and impair recovery.
Conclusion
Long COVID is real, measurable, and treatable – though recovery often requires patience and a multi-faceted approach. If you are struggling with persistent symptoms after COVID and feel you have not received adequate investigation or support, I encourage you to book a consultation at our practice in Zürich Seefeld. Recovery is possible, and it starts with understanding what is happening in your body.
