Recording of body temperature is an important but very common bedside clinical examination. Recording ob body temperature is a daily routine clinical examination of the physicians. Many factors influence the body temperature. For example: age is an important physiological factor that affects the body temperature. Body temperature is of two types-Shell temperature and core temperature. Temperature of the surface of the body is called is called shell temperature and temperature of the deep

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... of the body is called core temperature. Shell temperature is measured in axilla, groin and oral cavity. Core temperature is measured in rectum. Oral temperature is said to relate closely to the core body temperature. It is determined by keeping the thermometer in mouth. Axillary temperature represent the shell temperature. A study was done in India on axillary and oral temperature among hospitalized children and another study was also done in Srilanka on oral, axillary and rectal temperature on healthy adult subjects, but no information regarding relationship of oral and axillary temperature in normal healthy children and in young Abstract: Background: In comparison to other bedside clinical examination basal body temperature is one of the most important indicators in establishing diagnosis of disease. Some time physiological alteration is also important and it should be kept in mind. Materials and Methods: A total number of 246 cases were included in this study irrespective of their age and sex. This observational study was done in Mymensingh Medical College (a tertiary level institute) where study population was medical student. Materials also collected from a district orphanage. Results: There were no significant difference in oral temperature between young adult and children. And also no significant difference of axillary and oral temperature between male and female children. Conclusion: In this observational study there were no significant temperature difference between oral and axillary region irrespective of age and sex.