You've had the flu. You've had a cold. Maybe you've even had allergies! But how can you tell them apart? And if you even figure out that you do have influenza, are there any treatments you can take that can help?

References:

https://www.health.harvard.edu/staying-healthy/gastroenteritis-in-adults-a-to-z

https://academic.oup.com/aje/article/182/4/294/113092

https://onlinelibrary.wiley.com/doi/full/10.1111/irv.12515

https://www.cdc.gov/flu/about/burden/preliminary-in-season-estimates.htm

https://newsinhealth.nih.gov/2014/10/cold-flu-or-allergy

https://journals.plos.org/globalpublichealth/article?id=10.1371/journal.pgph.0000221

https://www.cdc.gov/mmwr/volumes/71/wr/mm7150a4.htm

https://www.mobihealthnews.com/news/lucira-health-files-bankruptcy-it-receives-eua-home-covid-19-flu-test

https://www.fda.gov/news-events/press-announcements/fda-authorizes-first-over-counter-home-test-detect-both-influenza-and-covid-19-viruses

https://www.nature.com/articles/s41598-019-39683-4

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3108042/

https://www.cdc.gov/flu/treatment/antiviralresistance.htm

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5404498/

https://www.mdpi.com/2076-2607/11/1/183

https://www.jbc.org/article/S0021-9258(21)00260-X/fulltext