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Fever :- Causes, Symptoms, Prevention, Treatment, Tablet, (Best Medicine)

 A person has a fever if their body temperature rises above the normal range of 98–100°F (36–37°C). It is a common sign of an infection. As a person's body temperature increases, they may feel cold until it levels off and stops rising. People describe this as “chills.”

A temporary increase in average body temperature of 98.6°F (37°C).

Medications such as paracetamol and ibuprofen may help to ease discomfort. Avoid giving children aspirin because this may cause a rare, serious condition.
Seeking medical care
See a doctor immediately if you have a child:
Younger than three months with a 100.4°F (38°C) or higher fever
Three to six months old with 102°F (38.9°C) or higher fever
Six to 24 months old with a 102°F (38.9°C) or higher fever that lasts more than a day
Two years old or older with fever who is listless, irritable or vomiting repeatedly
Or if you're an adult with a 103°F (39.4°C) or higher fever
Does sweating mean fever is breaking?
As you make progress against the infection, your set point drops back to normal. But your body temperature is still higher, so you feel hot. That's when your sweat glands kick in and start producing more sweat to cool you off. This could mean your fever is breaking and you're on the road to recovery.

Fever or elevated body temperature might be caused by:

  • A virus
  • A bacterial infection
  • Heat exhaustion
  • Certain inflammatory conditions such as rheumatoid arthritis — inflammation of the lining of your joints (synovium)
  • A malignant tumor
  • Some medications, such as antibiotics and drugs used to treat high blood pressure or seizures
  • Some immunizations, such as the diphtheria, tetanus and acellular pertussis (DTaP) or pneumococcal vaccine


Depending on what's causing your fever, additional fever signs and symptoms may include:

  • Sweating
  • Chills and shivering
  • Headache
  • Muscle aches
  • Loss of appetite
  • Irritability
  • Dehydration
  • General weakness


You may be able to prevent fevers by reducing exposure to infectious diseases. Here are some tips that can help:

  • Wash your hands often and teach your children to do the same, especially before eating, after using the toilet, after spending time in a crowd or around someone who's sick, after petting animals, and during travel on public transportation.
  • Show your children how to wash their hands thoroughly, covering both the front and back of each hand with soap and rinsing completely under running water.
  • Carry hand sanitizer with you for times when you don't have access to soap and water.
  • Try to avoid touching your nose, mouth or eyes, as these are the main ways that viruses and bacteria can enter your body and cause infection.
  • Cover your mouth when you cough and your nose when you sneeze, and teach your children to do likewise. Whenever possible, turn away from others when coughing or sneezing to avoid passing germs along to them.
  • Avoid sharing cups, water bottles and utensils with your child or children.

In the case of a high fever, or a low fever that's causing discomfort, your doctor may recommend an over-the-counter medication, such as acetaminophen (Tylenol, others) or ibuprofen (AdvilMotrin IB, others). Use these medications according to the label instructions or as recommended by your doctor.


A fever can be:

  • acute if it lasts for under 7 days
  • subacute if it lasts for up to 14 days
  • chronic or persistent if it lasts for over 14 days


Fevers can result from various factors, including:

  • an infection, such as strep throat, the flu, chickenpox, pneumonia, or COVID-19
  • rheumatoid arthritis
  • some medications
  • overexposing the skin to sunlight, or sunburn
  • heatstroke, either due to high ambient temperatures or prolonged strenuous exercise
  • dehydration
  • silicosis, which is a type of lung disease caused by long-term exposure to silica dust
  • amphetamine abuse
  • alcohol withdrawal

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