How many people have Long COVID?

Long COVID describes symptoms that continue, return or appear after the initial infection and cannot be explained more clearly by another diagnosis. Estimates change according to how long symptoms must last, whether COVID-19 was confirmed, and which group is being assessed. Symptoms can include fatigue, difficulty concentrating, joint pain, altered smell or taste, and low mood. The condition can follow a mild or severe infection.

Keep a symptom diary showing sleep, activity, work demands and any delayed worsening. Balance activity with planned rest rather than pushing through a flare. Regular meals, fluids and a steady sleep routine can support recovery. Arrange a medical review if symptoms interfere with work, study, exercise, mood or daily tasks; take your infection history and medicine list to the appointment.

Seek urgent help for severe breathing difficulty, chest pain, fainting, new confusion, sudden weakness, or thoughts of harming yourself. Arrange prompt clinical advice for new palpitations, worsening breathlessness, persistent fever, or a major decline in function. These symptoms can have causes other than Long COVID and should not be self-diagnosed.

Ask which symptoms need examination or testing, how to pace activity safely, and whether another condition or medicine could explain them. Discuss sleep, mood, concentration, smell or taste changes, pain, work needs and the plan for follow-up.