A fever is a temporary increase in your body temperature, often due to an illness. Having a fever is a sign that something out of the ordinary is going on in your body. For an adult, a fever may be uncomfortable but usually isn't a cause for concern unless it reaches 103 F (39.4 C) or higher. A part of your brain called the hypothalamus controls your body temperature. In response to an infection, illness, or some other cause, the hypothalamus may reset the body to a higher temperature. So when a fever comes on, it’s a sign that something is going on in your body.
Children between the ages of 6 months and 5 years may experience fever-induced convulsions (febrile seizures), which usually involve loss of consciousness and shaking of limbs on both sides of the body.
If a seizure occurs:
Most seizures stop on their own. Take your child to the doctor as soon as possible after the seizure to determine the cause of the fever.
Although a fever is easy to measure with a thermometer, finding its cause can be hard. Besides a physical exam, your doctor will ask about symptoms and conditions, medications, and if you've recently traveled to areas with infections or have other infection risks.
Your doctor may ask if you have been around someone with COVID-19 or have any other symptoms of COVID-19.
Sometimes, you may have a "fever of unknown origin." In such cases, the cause could be an unusual or not obvious condition such as a chronic infection, a connective tissue disorder, cancer, or another problem.
A person who needs this remedy during the flu feels chilly and exhausted, along with anxious restlessness. The person may be thirsty, but often only takes small sips. If the digestive system is involved, nausea with burning pain, or vomiting and acrid diarrhea may occur. If the flu is respiratory, a watery, runny nose with sneezing paroxysms and a dry or wheezing cough are often seen. The person's head usually feels hot, while the rest of the body is chilly.
This remedy relieves high fever of sudden onset with profuse sweating, and hypersensitivity to light and noise.
This relieves high fever with body aches improved by staying immobile.
This relieves low-grade fever with weakness and a tendency to nosebleeds and earaches.
This remedy relieves flu-like symptoms with fever, headache, dizziness, and general weakness. Thirst less.
This remedy relieves high fever of sudden onset, with a hot face and dry skin. Anxious.
When this remedy is needed during the flu, the person has a fever with an easily-flushing face and feels very weak and dizzy. Headache, hoarseness, sore throat, and cough are likely. If the focus is digestive, stomach pain and nausea or vomiting usually occur. A person who needs this remedy often has strong anxiety, wanting others to be around to offer company and reassurance. Strong thirst, with a tendency to vomit, when liquids warm up in the stomach, is a strong indication of Phosphorus.
This remedy may be useful if the flu is very long-lasting or has some lingering symptoms—often after people have neglected to take good care of themselves. Symptoms, either digestive or respiratory, will often have a hot or burning quality. The person may feel hot and sweaty, with a low fever and reddish mucous membranes. Heat aggravates the symptoms, and the person often feels worse after bathing.