Understanding Lingering Flu Symptoms: What to Expect After the Fever Subsides

The influenza virus, or the flu, affects people mainly during the fall and winter months. Common flu symptoms include a high fever, muscle aches, chills and a dry cough. These flu symptoms often persist for three to four days, and other symptoms may linger for longer.

Fatigue

• Extreme tiredness and fatigue is the most common lingering symptom of the flu. Individuals stricken by the flu can feel run down for up to three or four weeks after battling the flu.

Cough

• The dry cough associated with the flu can last for a week or two after all other symptoms have vanished.

Secondary Infections

• Because the flu can weaken the immune system, you are more vulnerable to bacterial infections (like sinus infections) for a couple weeks after recovering.

Drainage

• Nasal drainage may continue for a week or two after your fever has run its course.

Dehydration

• If not properly addressed, dehydration can become a lingering problem after the flu. Nasal discharge, sweating and nausea can all contribute to lower fluid levels, which can lead to dizziness and weakness.