Infection: Bacterial or viral? - Mayo Clinic
2023年2月4日 · Answer From Pritish K. Tosh, M.D. Bacteria cause bacterial infections. Viruses cause viral infections. Antibiotic medicines kill or keep many bacteria from growing but don't treat viruses. Antiviral medicines help the body clear out some viruses.
Meningitis - Symptoms and causes - Mayo Clinic
2023年10月4日 · Meningitis is an infection and inflammation of the fluid and membranes surrounding the brain and spinal cord. These membranes are called meninges. The inflammation from meningitis typically triggers symptoms such as headache, fever and a stiff neck. Most cases of meningitis in the United States are caused by a viral infection.
Bronchitis - Symptoms and causes - Mayo Clinic
2024年7月31日 · To reduce your risk of catching a viral infection, wash your hands frequently and get in the habit of using alcohol-based hand sanitizers. Also, avoid touching your eyes, nose and mouth. Avoid close contact with people who have a viral infection. Stay away from people who have the flu or another respiratory illness. Avoid cigarette smoke.
Viral gastroenteritis (stomach flu) - Symptoms & causes - Mayo …
2022年1月18日 · Viral gastroenteritis is an intestinal infection that includes signs and symptoms such as watery diarrhea, stomach cramps, nausea or vomiting, and sometimes fever. The most common way to develop viral gastroenteritis — often called stomach flu — is through contact with an infected person or by consuming contaminated food or water.
Ear infection (middle ear) - Symptoms & causes - Mayo Clinic
2021年6月23日 · Chronic otitis media with effusion, occurs when fluid remains in the middle ear and continues to return without bacterial or viral infection. This makes children susceptible to new ear infections and may affect hearing. Chronic suppurative otitis media, an ear infection that doesn't go away with the usual treatments. This can lead to a hole in ...
Pneumonia - Symptoms and causes - Mayo Clinic
2020年6月13日 · Pneumonia and your lungs Enlarge image. Pneumonia is an infection that inflames the air sacs in one or both lungs. The air sacs may fill with fluid or pus (purulent material), causing cough with phlegm or pus, fever, chills, and difficulty breathing. A variety of organisms, including bacteria, viruses and fungi, can cause pneumonia.
Coronavirus disease 2019 (COVID-19) - Symptoms and causes
COVID-19, also called coronavirus disease 2019, is an illness caused by a virus. The virus is called severe acute respiratory syndrome coronavirus 2, or more commonly, SARS-CoV-2. It started spreading at the end of 2019 and became a pandemic disease in 2020. Medicine can limit the seriousness of the ...
Meningitis - Diagnosis and treatment - Mayo Clinic
2023年10月4日 · Acute bacterial meningitis must be treated right away with intravenous antibiotics and sometimes corticosteroids. This helps to ensure recovery and reduce the risk of complications, such as brain swelling and seizures. The antibiotic or combination of antibiotics depends on the type of bacteria causing the infection.
Respiratory syncytial virus (RSV) - Symptoms & causes - Mayo Clinic
2023年10月4日 · Infants are most severely affected by RSV. Signs and symptoms of severe RSV infection in infants include: Short, shallow and rapid breathing. Struggling to breathe — chest muscles and skin pull inward with each breath. Cough. Poor …
Infectious diseases - Symptoms & causes - Mayo Clinic
2022年2月18日 · Infectious diseases are disorders caused by organisms — such as bacteria, viruses, fungi or parasites. Many organisms live in and on our bodies. They're normally harmless or even helpful. But under certain conditions, some organisms may cause disease. Some infectious diseases can be passed from person to person.