Early Flu Symptoms

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By dr. gromatzky
Article Sources Article Sources
  • 1. Boktor SW, Hafner JW. Influenza. [Updated 2020 May 26]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2020 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK459363/
  • 2. “Cold Versus Flu.” Centers for Disease Control and Prevention, Centers for Disease Control and Prevention, 30 Dec. 2019, www.cdc.gov/flu/symptoms/coldflu.htm.
  • 3. Eccles, Ron. “Understanding the symptoms of the common cold and influenza.” The Lancet. Infectious diseases vol. 5,11 (2005): 718-25. doi:10.1016/S1473-3099(05)70270-X
  • 4. Evans, Sharon S et al. “Fever and the thermal regulation of immunity: the immune system feels the heat.” Nature reviews. Immunology vol. 15,6 (2015): 335-49. doi:10.1038/nri3843
  • 5. “Flu Symptoms & Complications.” Centers for Disease Control and Prevention, Centers for Disease Control and Prevention, 18 Sept. 2019, www.cdc.gov/flu/symptoms/symptoms.htm.
  • 6. 6 North County Health Services, 18 June 2020, www.nchs-health.org/the-meaning-behind-different-types-of-coughs/.
Medical Expert Medical Expert

The flu is a virus that affects the respiratory system and can be passed between people via respiratory fluids. Sometimes it can be passed between species such as with the Avian Flu. The flu is contagious before symptoms show up until about a week after contracting it. The flu vaccine is created to avoid or limit the symptoms of the anticipated viral type and strain of that season.1Boktor SW, Hafner JW. Influenza. [Updated 2020 May 26]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2020 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK459363/

Lab tests and perhaps a chest x-ray will be used to help make a diagnosis. Severity of symptoms, risk factors, and how the individual is responding will guide what kind of treatment is used and can range from none at all to hospital level care.1Boktor SW, Hafner JW. Influenza. [Updated 2020 May 26]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2020 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK459363/ Typically flu symptoms will come on quite abruptly and can range from mild to severe.2“Cold Versus Flu.” Centers for Disease Control and Prevention, Centers for Disease Control and Prevention, 30 Dec. 2019, www.cdc.gov/flu/symptoms/coldflu.htm. Visit a doctor if you have some or all of the following symptoms.

1. Cough

A cough is an action meant to remove some sort of an obstruction from the pulmonary system. The pulmonary, or respiratory, system includes the trachea, bronchioles, lungs, alveoli, etc. and is our airway in and out of the body.

A cough can indicate a number of illnesses affecting the pulmonary system such as allergies, asthma, the flu, cancer, pleuritis, COPD, a pulmonary embolism, pulmonary hypertension, etc. A cough alone is typically not enough to make a diagnosis and so other symptoms and tests will be taken into account. That being said, the type of cough (dry vs wet vs croup vs whooping vs uncontrollable) can help indicate what may be going on.66 North County Health Services, 18 June 2020, www.nchs-health.org/the-meaning-behind-different-types-of-coughs/.

Flu

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