Typhoid Fever
Typhoid is a potentially serious bacterial infection usually spread through contaminated food or water. Persistent fever with fatigue, headache, nausea, belly pain, constipation, or diarrhoea needs clinical assessment because it overlaps with many illnesses. Blood testing and clinician-selected antibiotics are important.
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Quick Reference Facts
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In simple words
Typhoid, also called enteric fever, is a potentially serious infection caused by Salmonella Typhi. It is usually acquired through contaminated food or water. Fever may build over days and occur with fatigue, headache, nausea, belly pain, constipation, diarrhoea, or sometimes a rash. Its symptoms are not specific, so a persistent fever should not be assumed to be typhoid without medical assessment.
A systemic bacterial infection caused by Salmonella Typhi. After entering through the intestinal tract, the bacteria can spread into the bloodstream. Paratyphoid is a similar illness caused by related Salmonella bacteria; a clinician distinguishes them with laboratory testing.
Common causes
- Ingesting food or water contaminated with Salmonella Typhi
- Exposure where safe water, sanitation, or food hygiene are limited
- Contact with a person who is shedding the bacteria when hand hygiene and food-safety practices break down
Risk Factors
- Living in or travel to an area where typhoid is common
- Limited access to safely treated drinking water and sanitation
- Children and people with limited access to timely medical care
- Eating food or drinking water with uncertain safety
Common symptoms
- Persistent or gradually increasing fever, fatigue, headache, chills, or muscle aches
- Nausea, reduced appetite, belly pain, constipation, or diarrhoea
- Occasional faint pink spots on the trunk, though many people will not have a rash
- Symptoms can overlap with malaria, dengue, viral infections, and many other causes of fever
Clinical Red Flags
Seek urgent medical attention at an emergency department or primary care clinic if you present with any of the following symptoms:
- Severe or worsening belly pain, swollen or rigid abdomen, black stools, visible blood in stool, or vomiting blood
- Confusion, extreme drowsiness, fainting, breathing difficulty, dehydration, or inability to keep fluids down
- Persistent high fever with worsening weakness, particularly after more than a week of illness
- A young child, pregnancy, older age, reduced immune defenses, or important long-term conditions with persistent fever
Lifestyle & diet support
Use safe drinking water and food-handling practices: wash hands with soap after using the toilet and before preparing food, eat thoroughly cooked food served hot, and use water known to be safe. While being treated, follow clinician advice about food preparation and follow-up testing; avoid preparing or serving food for others if advised. Ask a clinician or immunization service whether typhoid vaccination is relevant for your age, location, or travel plans.
Treatment Approaches
Conventional Management
Typhoid needs clinician-selected antibiotics; resistance is common, so do not self-start, share, or stop antibiotics early. A clinician may tailor treatment to local resistance patterns and culture results. Take prescribed antibiotics exactly as directed and complete the course unless the prescriber changes it. Rest and fluids support recovery, but urgent hospital care is needed for red flags or complications.
Homeopathic Approach
Reliable clinical evidence has not established homeopathy as a treatment for typhoid. It must not replace clinical assessment, blood culture, prescribed antibiotics, hydration, food-safety measures, or urgent treatment for complications.
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Diagnosis & tests
Investigation Protocol
A clinician considers the symptom pattern, residence or travel, food and water exposures, and examination. Blood culture is a main method to diagnose typhoid; more than one culture may be needed. Stool or urine cultures can sometimes help. Some blood antibody tests can be misleading, so test choice and interpretation should be led by a clinician and local laboratory guidance.
Differential Diagnosis
Malaria, dengue, chikungunya, leptospirosis, viral hepatitis, influenza, COVID-19, gastroenteritis, appendicitis, urinary infections, and other bacterial or viral illnesses can resemble typhoid.
- Blood culture to identify Salmonella Typhi and, where possible, test antibiotic susceptibility
- Additional blood cultures when a clinician advises
- Stool or urine culture in selected situations
- Blood counts and other tests to assess a persistent fever or possible complications
Imaging is not routinely used to diagnose uncomplicated typhoid. Hospital teams may arrange ultrasound, CT, or other tests if they suspect an abdominal complication or another diagnosis.
Differential Diagnosis Matrix
Malaria, dengue, chikungunya, leptospirosis, viral hepatitis, influenza, COVID-19, gastroenteritis, appendicitis, urinary infections, and other bacterial or viral illnesses can resemble typhoid.
Reference Citations & Evidence Sources
Clinical Reviews & Textbooks
- CIT-0107World Health Organization. "Typhoid." World Health Organization (2026).
- CIT-0108Centers for Disease Control and Prevention. "Clinical Guidance for Typhoid Fever and Paratyphoid Fever." Centers for Disease Control and Prevention (2026).
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