Typhoid fever is a life-threatening illness caused by the bacterium Salmonella Typhi. Symptoms of typhoid fever usually develop 1 to 3 weeks after exposure to the bacteria. The early symptoms include:

• Fever that starts low and increases throughout the day, possibly reaching as high as 104 degrees Fahrenheit (40 degrees Celsius)
• Chills
• Headache
• Weakness and fatigue
• Muscle aches
• Sweating
• Dry cough
• Loss of appetite
• Stomach pain
• Diarrhea or constipation

As the infection progresses, symptoms may worsen and additional symptoms may develop, such as:

• Abdominal tenderness
• Enlarged spleen and liver
• Rash of flat, rose-colored spots
• Delirium or confusion

If left untreated, typhoid fever can lead to serious complications and even death. If you have symptoms of typhoid fever, it is important to see a doctor immediately. Treatment with antibiotics can help to kill the bacteria and relieve symptoms.