Fever, also known pyrexia is a febrile response to an underlying medical condition in the body. Fever is not always bad. Many times it is the way by which the body eliminates bacteria and viruses which cause the underlying conditions.

• An infection or illness.
• Overdressing – infants who are dressed too warmly or bundled too highly could develop a fever because they cannot properly regulate their body temperature.
• Response to a recent vaccination.
• Teething.

• High fever — body temperature of 101 F (38.3 C) or greater.
• Chills.
• Severe headache.
• Widespread aches and pains.
• Restlessness.
• Nausea and vomiting.
• Loss of appetite.
• Sore throat.
• Fatigue.
• A rash of red spots or blotches.

• Easily digestible diet is advised for the patient.
• Boiled or steamed vegetables.
• Vegetable soup.
• Fruit and fruit juices.
• Small quantities of cow milk can be taken two to three times a day.
• Khichadi is very good with spices like cumin seeds, coriander, turmeric, ginger and salt can be also be added to it.
• Egg plant, bitter gourd and cooked radish and barley water is good.
• Small amounts of whole grain bread or biscuits can be taken with milk. Heavy foods that are difficult to digest like fried foods, fast foods, meat, chicken, fish, and raw foods should be completely avoided.
• The patient should take ample rest.

• The best way to prevent the spread of infection is to wash your hands frequently.
• Keep the home and work environment clean.
• Avoid contact with sick people.
• Do not share cups or utensils, especially if they are not clean.
• Wear appropriate protective clothing and equipment when working with animals.
• Make sure your immunizations are current and get the appropriate preventive medication if traveling to another country.
• During strenuous exercise, stay well hydrated, wear cool clothing, take frequent breaks, and cool down after the workout. Avoid use of alcohol and drugs that can alter behavior and judgment, and don't prevent a person from seeking shelter from the heat.