In clinical terms, fever or pyrexia is a body temperature above the normal range (37.8°C or 100°F). It is not a disease; rather, it is a symptom of an underlying disease/infection. Fever occurs temporarily in the body as a part of our immune defence that protects the body by fighting against infections. It usually subsides on its own or after taking certain over-the-counter (OTC) medications.
The hypothalamus in the brain controls our body temperature. In certain conditions, the hypothalamus resets the body temperature higher than the normal range, causing a fever.Â
Certain conditions responsible for fever include:
Generally, adults measure their fever by placing a digital thermometer in the mouth or under the armpit. In children under 3 years of age, rectal temperature is taken to check the fever. If you have other symptoms, the doctor will advise a few tests to look for any underlying infection.Â
The treatment of a fever involves OTC medications known as antipyretics such as paracetamol, ibuprofen, or diclofenac, to be taken every 6 hours or twice a day. Other treatments include antibiotics (as per underlying disease), fluids, and rest.Â
If your body temperature is more than 102°F (38.9°C), persists for over 48 hours, is accompanied by other symptoms like body ache, headache, loss of appetite, etc., one should immediately consult a doctor. After a thorough medical examination, the doctor will prescribe medications or ask you to undergo some diagnostic tests to look for an underlying cause. You can consult any of our experienced doctors at Yashoda Hospitals.
A body temperature over 100°F or 37.8°C is categorised as a fever. However, the temperature range varies among children and adults:
A low-grade fever is defined as the body's temperature ranging between 99°F-102°F (37.2°C-39.4°C). Along with a rise in the body temperature, the person may experience
Yes, certain types of allergies, like hay fever caused by pollen or dust particles, can trigger inflammation in the body that can cause a fever.
Scarlet Fever is a type of bacterial disease accompanied by sore throat, high-grade fever, and a characteristic red rash on the body. It affects children in the age groups of 5-15 years and is treated by antibiotics.
A child's fever is considered too high if their rectal temperature exceeds 100.4°F (38°C). If a fever in the child persists after the medication, consult a paediatrician immediately.
Teething may cause a slight increase in body temperature that is not considered a fever. It usually subsides on its own or after taking paracetamol.
Yellow fever is a fatal disease caused by the mosquito Aedes aegypti. It is named yellow fever because it causes jaundice in the patients along with high-grade fever. Yellow fever is a vaccine-preventable disease that commonly occurs in African and some South American countries.
Fever after vaccination is a common occurrence. Give a liquid suspension of paracetamol 120 mg twice a day or as per the doctor's recommendation. Also, hydrate the baby with enough fluids to prevent dehydration.
No, hay fever or allergic rhinitis is a type of allergy to tiny particles present in the air, e.g. pollen, dust particles, animal dander, etc. It doesn't spread from person to person and is not contagious.
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