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Fever could be considered any body temperature above the normal 98.6 F (37 C), medically, a person is not considered to have a significant fever until the temperature is above 100.4 F (38.0 C)
A high body temperature, or fever, is one of the ways our immune system attempts to combat an infection. Usually, the rise in body temperature helps the individual resolve an infection
Fever can be a symptom of various disease like Dengue DI, malaria, Typhoid, Chikungunya, and viral infection etc.
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Fever can be caused by a number of factors:
Depending on what's causing your fever, additional fever signs and symptoms may include
To diagnose fever, temperature of patient is taken while patient is at rest, if the reading is high, they have a fever.
Person is said to have a fever if:
The average normal body temperature is 98.6oF (37oC), which can vary upto 1oF (0.6oC) above or below the normal temperature throughout the day. Any body temperature above the normal range is generally considered as fever. However, medically, a person is not considered to have a significant fever until the temperature is above 100.4oF (38oC).
During fever, there is a temporary increase in body temperature. On putting your head on your forehead if it feels hot to touch, you may have fever. In fever even the skin on entire body may feel hot. Signs such as body ache, flushed complexion, fatigue, chills, dehydration, and loss of appetite are also an indication of fever.
There are can several reasons which can cause fever – infection from bacteria, virus, parasites and fungi; reaction to certain medication or immunization, chronic conditions associated with inflammation such as rheumatoid arthritis, severe trauma including surgery and during certain types of cancer.
Common diagnostic tests like Complete Blood Count (CBC), Urine routine and microscopic examination (Urine R/M) and a blood culture test to detect fever.Further, there are specific tests for specific fever types like Widal’s test for typhoid fever, dengue test for dengue fever, Mantoux test for tuberculosis, etc. The tests required for this will vary significantly depending on the locality, seasonality, etc. as the cause of fever keeps changing based on this.