
Influenza (flu) - Symptoms and causes - Mayo Clinic
Dec 19, 2025 · When to see a doctor Most people who get the flu can manage it at home and often don't need to see a healthcare professional. If you have flu symptoms and are at risk of …
Flu symptoms: Should I see my doctor? - Mayo Clinic
Oct 8, 2025 · Unlike a cold, the flu tends to come on suddenly and makes you feel much worse than a cold. Common symptoms of the flu often include a fever but not always, as well as …
Influenza (flu) - Diagnosis and treatment - Mayo Clinic
Dec 19, 2025 · To diagnose the flu, also called influenza, your healthcare professional does a physical exam, looks for symptoms of flu and possibly orders a test that detects flu viruses.
COVID-19 vs. flu: Similarities and differences - Mayo Clinic
Oct 22, 2025 · Seasonal flu symptoms usually show up quickly, about 1 to 4 days after you're around someone who is sick. COVID-19 symptoms generally appear 2 to 14 days later.
H1N1 flu (swine flu) - Symptoms and causes - Mayo Clinic
Mar 23, 2023 · If you're generally healthy and develop flu symptoms, most people may not need to see a health care provider. But some people are at higher risk of flu complications.
Bird flu (avian influenza) - Symptoms and causes - Mayo Clinic
Jun 8, 2024 · Flu viruses in other animals, such as birds, may be a risk to people. Learn more about the symptoms, causes, prevention and treatment for bird flu in people.
Viral gastroenteritis (stomach flu) - Symptoms & causes - Mayo …
Apr 30, 2025 · Viral gastroenteritis is an intestinal infection that includes signs and symptoms such as watery diarrhea, stomach cramps, nausea or vomiting, and sometimes fever.
COVID-19, cold, allergies and the flu: What are the differences?
Oct 22, 2025 · Flu symptoms usually appear about 1 to 4 days after exposure to an influenza virus. COVID-19 can cause more-serious illnesses in some people than can the flu. Also, …
Flu shot: Your best bet for avoiding influenza - Mayo Clinic
Oct 24, 2025 · Get answers to your flu vaccine questions, including whether the vaccines are effective, what forms are available and what side effects to expect.
Viral gastroenteritis (stomach flu) - Mayo Clinic
Apr 30, 2025 · Your doctor will likely diagnose viral gastroenteritis (stomach flu) based on symptoms, a physical exam and sometimes on the presence of similar cases in your community.