Infectious Diseases

Long COVID: recognizing and supporting

Persistent symptoms after infection

Dr. Sophie Martin

Infectiologist

6 min read
Medical illustration of Long COVID: recognizing and supporting

In simple terms

Fatigue, brain fog, dyspnea: understanding and supporting long COVID.

Definition

Symptoms persisting >3 months after SARS-CoV-2 infection, with no other explanation. Affects 5-15% of infected individuals. More common in women, after severe infections, but possible after mild forms.

Main symptoms

  • Intense fatigue, post-exertional malaise
  • Brain fog: concentration, memory problems
  • Dyspnea, persistent cough
  • Taste/smell disturbances, palpitations, dizziness
  • Anxiety, depression, sleep disorders

Management

Multidisciplinary approach: coordinating GP, respiratory and exercise rehabilitation physiotherapy (with caution), speech therapy for cognitive disorders, psychological support, rehabilitation programs. No specific validated treatment to date, but much research underway.

Practical advice

Pacing (graduated energy management), avoid deconditioning like overactivity. Adapted rhythm for return to work.

The words explained

Medical terms used above, in everyday language.

Symptom
A sign you can feel or see that something is wrong, like pain, tiredness or a rash.
Cognitive
Related to thinking: memory, attention, learning and decision-making.
Anxiety
Ongoing worry or fear that is strong enough to affect daily life.

When should you see a doctor?

  • Your symptoms last more than a few weeks or keep coming back.
  • They get worse quickly, or stop you doing everyday things.
  • You notice sudden pain, breathing trouble, fainting or bleeding — seek urgent care.
  • You already take medication and want to change anything about it.

This article explains general health information. It does not replace advice from your own doctor.

Frequently asked questions

What is Long COVID: recognizing and supporting?
Fatigue, brain fog, dyspnea: understanding and supporting long COVID.
What are the main symptoms or signs of Long COVID: recognizing and supporting?
Common signs vary from person to person. The article above lists the symptoms to watch for, how they progress, and when they need medical attention.
When should you see a doctor for Long COVID: recognizing and supporting?
See a doctor if symptoms last more than a few weeks, get worse quickly, stop you doing everyday things, or if you notice sudden pain, breathing trouble, fainting or bleeding.