Clinical Presentation of Typhoid Fever

Common Symptoms

Fever is present in 97-100% of cases, typically sustained and high-grade with insidious onset over 3-7 days, according to the Centers for Disease Control and Prevention guidelines 1
Headache, malaise, and anorexia are common constitutional symptoms, as stated by the World Health Organization 1
Gastrointestinal symptoms, including abdominal pain, constipation or diarrhea, nausea, and vomiting, are typical presentations, as noted by the American College of Physicians 1
Nonproductive cough may be present, as indicated by the Infectious Diseases Society of America 1

Calf pain and tenderness are specifically documented as features of Rocky Mountain Spotted Fever (RMSF), not typhoid fever, as distinguished by the Centers for Disease Control and Prevention 2, 3
The guidelines explicitly state that calf pain is among the "less commonly observed" findings in RMSF, along with bilateral periorbital edema and edema of the dorsum of hands and feet, as reported by the Centers for Disease Control and Prevention 2, 3, 4

When evaluating a patient with fever and calf pain, consider RMSF or other tickborne rickettsial diseases rather than typhoid fever, as recommended by the Centers for Disease Control and Prevention 2, 4
For typhoid fever diagnosis, focus on the classic triad of sustained fever, gastrointestinal symptoms, and travel history to endemic areas (South/Southeast Asia), as suggested by the World Health Organization 1, 5
Obtain blood cultures (2-3 specimens of 20 mL each in adults) before initiating antibiotics, as this is the gold standard for typhoid diagnosis, according to the Infectious Diseases Society of America 5