Here are the different types of fever showing the variation of the body temperature from normal, subnormal to moderate body temperature. The following below are the different types of fever
1. Constant Fever:
In this case, there is a continuous elevation of temperature which does not vary more than 1.1 degree centigrade(2 degree F) within a twenty four hour period.
2. Remittent Fever:
There are variations of more than 1.1 degree centigrade(2 degree F) in twenty four hours, but the lowest temperature does not reach normal within that period.
3. Intermittent Fever:
This type may also be called hectic or swinging, the temperature swinging from normal or subnormal to moderate or high pyrexia at intervals of one, two or three days. There is a variation of more than 1.1 degree centigrade(2 degree F) between the high and the low temperature, the lowest being normal or below normal. This is found in tuberculosis and malaria.
4. Irregular Fever :
This type of pyrexia does not come into any other clearly defined group but may show some of the characteristics of some or all.
5. Inverse Fever :
Here, the highest temperature is recorded in the morning and the lowest in the evening. This is found to be a normal state of affairs in night workers.
6. Apyrectic :
In this case, a typical febrile condition may be described, the only characteristics lacking being an elevation of temperature. This has sometimes occurred in typhoid fever. The onset of a fever may occur gradually or suddenly. When it is gradual, the temperature may take several days to a week to reach its maximum level, whereas when the onset is sudden, it may reach its highest level within an hour or more. This sudden onset is usually accompanied by a shivering attack or rigor. As a rule when the onset has been gradual, the decline of the fever is gradual.
This is the name given to the gradual return to normal of a temperature, taking three, four or possibly five days to do so. With the decline of the fever, there is a steady improvement in the pulse and respiration rates and in the general condition of the patient
The temperature falls sharply to normal within twenty four hours and there is a corresponding improvement in the pulse and respiration rates and also in the general condition of the patient or person.
FALSE OR PSEUDO-CRISIS
This may occur during the course of a disease before the true crisis. There is a decline of temperature which is not accompanied by a corresponding improvement in the pulse and respiration rates or in the general condition of the patient. The temperature rises again after a short period.