Norovirus can remain contagious after vomiting and diarrhea stop. Learn the CDC's 48-hour rule, cleaning, hydration, and return-to-work guidance.
Sudden vomiting in adults can result from gastroenteritis, food-related illness, migraine, medication effects, pregnancy, or other causes. Some illnes
Fainting, also called syncope, occurs when the brain temporarily receives inadequate blood flow. A brief episode can result from dehydration, standing
Most people with RSV are contagious for about three to eight days, and they can spread the virus one or two days before symptoms begin. Some people wi
Most sore throats improve as the underlying cause resolves, especially when caused by a respiratory virus. Warm or cool fluids, appropriate pain relie
Walking pneumonia is an informal term for milder pneumonia, often associated with Mycoplasma pneumoniae. It can be contagious when caused by an infect
A temperature around 100.4°F (38°C) or higher is commonly considered a fever in adults, although the significance of a reading depends on the measurem
A red, swollen throat, enlarged tonsils, white patches, or tiny red spots on the palate may occur with strep throat. None of these appearances confirm
Low sodium in the blood, called hyponatremia, means the measured sodium concentration is below the laboratory's reference range. It often reflects a c
Uncomplicated influenza often improves over approximately three to seven days, although fatigue and cough can linger for two weeks or longer. The course varies