Weakness and fatigue in typhoid fever?

Weakness and fatigue in typhoid fever are primarily caused by the body's response to the Salmonella typhi bacteria, which leads to systemic inflammation and the release of toxins. The infection disrupts normal metabolic processes, resulting in significant energy depletion and nutritional deficiencies due to fever, loss of appetite, and gastrointestinal symptoms. This combination of factors contributes to profound fatigue and weakness, making recovery challenging without appropriate treatment.