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Body ache
Hands and feet feel hot
Have a fever
Have a headache
Pain when swallowing
Not seeing your symptoms? No worries!
COVID-19 is a viral respiratory illness caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).
Your doctor may ask these questions to check for this disease:
Early antiviral treatment can reduce the severity of symptoms and lower the risk of complications like hospitalization and death. It is especially recommended for people most at risk for severe disease like the very young, elderly or people with pre-existing conditions. Several antiviral medications can inhibit viral replication, especially when administered in the early stages of infection. This can help shorten the duration of symptoms and prevent progression to severe disease. In cases where COVID-19 leads to serious symptoms like difficulty breathing or respiratory failure, hospitalization may be required. Treatment may include oxygen therapy, antiviral medications, and supportive care. It's crucial to seek medical attention as early as possible to receive timely treatment and minimize risks.
Reviewed By:
Kenji Taylor, MD, MSc (Family Medicine, Primary Care)
Dr. Taylor is a Japanese-African American physician who grew up and was educated in the United States but spent a considerable amount of time in Japan as a college student, working professional and now father of three. After graduating from Brown, he worked in finance first before attending medical school at Penn. He then completed a fellowship with the Centers for Disease Control before going on to specialize in Family and Community Medicine at the University of California, San Francisco (UCSF) where he was also a chief resident. After a faculty position at Stanford, he moved with his family to Japan where he continues to see families on a military base outside of Tokyo, teach Japanese residents and serve remotely as a medical director for Roots Community Health Center. He also enjoys editing and writing podcast summaries for Hippo Education.
Content updated on Feb 13, 2025
Following the Medical Content Editorial Policy
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With a free 3-min COVID-19 quiz, powered by Ubie's AI and doctors, find possible causes of your symptoms.
This questionnaire is customized to your situation and symptoms, including the following personal information:
Biological Sex - helps us provide relevant suggestions for male vs. female conditions.
Age - adjusts our guidance based on any age-related health factors.
History - considers past illnesses, surgeries, family history, and lifestyle choices.
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Q.
What is a Virus? Why Your Body is Reacting and Medically Approved Next Steps
A.
A virus is a microscopic infectious agent that is not alive on its own, invades your cells to make copies, and most of the fever, cough, aches, and fatigue you feel are your immune system working to fight it. Medically supported next steps include rest and hydration, safe symptom relief, monitoring for red flags such as trouble breathing or a fever over 3 days, and considering testing and temporary isolation when appropriate; antibiotics do not treat viruses. There are several factors to consider that could change your next steps, so see the complete guidance below.
References:
* Sironi M, et al. An evolutionary view of virus-host interaction. J Gen Virol. 2022 Sep;103(9):001796. doi: 10.1099/jgv.0.001796. PMID: 36048126.
* Galluzzi L, et al. Immunological effects of viral infections. Nat Rev Immunol. 2022 Mar;22(3):149-166. doi: 10.1038/s41577-021-00632-1. Epub 2021 Dec 2. PMID: 34857973.
* Dambrowski Z, Kuc K, Nowak K. Viral Pathogenesis-The Multifaceted Nature of Host-Virus Interactions. Int J Mol Sci. 2023 Apr 19;24(8):7458. doi: 10.3390/ijms24087458. PMID: 37108846; PMCID: PMC10141674.
* De Clercq E. Antiviral drugs: a critical update. J Clin Virol. 2021 Sep;142:104928. doi: 10.1016/j.jcv.2021.104928. Epub 2021 Jul 27. PMID: 34333333.
* Pulendran B, Arunachalam PS, Mélardy C, Prabakaran M. The future of vaccine development. Nat Immunol. 2023 Apr;24(4):550-558. doi: 10.1038/s41590-023-01479-x. Epub 2023 Mar 23. PMID: 36959247; PMCID: PMC10076241.
Q.
That "Crushing" Fatigue? Why Your Body Is Stalling: Covid Symptoms 2024 & Next Steps
A.
Crushing fatigue, brain fog, cough, and sore throat in 2024 can still be COVID even when symptoms seem mild or cold-like; testing and repeat testing 24 to 48 hours apart can clarify, and the fatigue often reflects immune inflammation that can linger after other symptoms fade. There are several factors to consider. See below to understand more, including when to suspect long COVID after 4 weeks, who should seek early antivirals within 5 days, home recovery steps, and urgent warning signs that require immediate care and could change your next steps.
References:
* pubmed.ncbi.nlm.nih.gov/38244199/
* pubmed.ncbi.nlm.nih.gov/37409953/
* pubmed.ncbi.nlm.nih.gov/36768136/
* pubmed.ncbi.nlm.nih.gov/37865249/
* pubmed.ncbi.nlm.nih.gov/37190145/
Our symptom checker AI is continuously refined with input from experienced physicians, empowering them to make more accurate diagnoses.

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Which is the best Symptom Checker?
Ubie’s symptom checker demonstrated a Top-10 hit accuracy of 71.6%, surpassing the performance of several leading symptom checkers in the market, which averaged around 60% accuracy in similar assessments.
Link to full study:
https://www.medrxiv.org/content/10.1101/2024.08.29.24312810v1Singhal, T. (2020). A review of coronavirus disease-2019 (COVID-19). The Indian Journal of Pediatrics.
https://link.springer.com/article/10.1007/s12098-020-03263-6He, F., Deng, Y., & Li, W. (2020). Coronavirus disease 2019: What we know? Journal of Medical Virology.
https://onlinelibrary.wiley.com/doi/abs/10.1002/jmv.25766Zu, Z. Y., Jiang, M. D., Xu, P. P., Chen, W., Ni, Q. Q., Lu, G. M., & ... (2020). Coronavirus disease 2019 (COVID-19): a perspective from China. Radiology.
https://pubs.rsna.org/doi/abs/10.1148/radiol.2020200490