Typhoid Symptoms: Early Signs You Shouldn’t Ignore Typhoid is a bacterial infection caused by Salmonella typhi , and it can become dangerous if not treated on time. Knowing the early typhoid symptoms can help you seek medical care quickly and avoid complications. Early Symptoms of Typhoid The first signs of typhoid often appear within 6 to 30 days after exposure to the bacteria. You may start feeling weak, tired, or feverish. Common early typhoid symptoms include: Mild to high fever that gradually increases each day Headache and body pain Fatigue or feeling unusually weak Abdominal pain or discomfort Loss of appetite These early warning signs may seem similar to a common flu, but if they persist for more than a few days, it’s best to get tested for typhoid fever. Advanced Symptoms of Typhoid Fever If left untreated, typhoid symptoms can become severe over time. The infection may spread and cause: High fever reaching 104°F (40°C) Constipation or diarrhea Skin rashes with small ...