Infectious Diseases

Long COVID: Persistent Post-Viral Symptoms

Fatigue, brain fog, and exercise intolerance can last months after acute COVID-19.

Healthlife Editorial Team

Medical writers

6 min read
Medical illustration of Long COVID: Persistent Post-Viral Symptoms

In simple terms

Fatigue, brain fog, and exercise intolerance can last months after acute COVID-19.

What you need to remember

  • ApproachPacing, graded rehabilitation for suitable patients, and management of specific symptoms (POTS, dysautonomia).

Long COVID affects roughly 10-20% of adults after infection; risk drops with vaccination.

Approach

Pacing, graded rehabilitation for suitable patients, and management of specific symptoms (POTS, dysautonomia).

Ruling out treatable causes (thyroid, anaemia, sleep apnea) is essential before attributing symptoms to long COVID.

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.
Vaccine
A safe training session for your immune system, so it can fight a germ later.

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: Persistent Post-Viral Symptoms?
Fatigue, brain fog, and exercise intolerance can last months after acute COVID-19.
What are the main symptoms or signs of Long COVID: Persistent Post-Viral Symptoms?
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: Persistent Post-Viral Symptoms?
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.