type of fever

 Fever can be classified into several types based on its pattern, duration, and cause. Here are the main types:

1. Intermittent Fever

Pattern: Temperature fluctuates between normal and high during the day, returning to normal each day or within a few days.

Common in: Malaria, sepsis, tuberculosis.

2. Remittent Fever

Pattern: Temperature fluctuates, but never returns to normal. It varies by more than 1°C in 24 hours.

Common in: Endocarditis, respiratory infections, and certain viral infections.

3. Continuous (Sustained) Fever

Pattern: Persistent fever with minimal fluctuations (usually less than 1°C variation) and no return to normal.

Common in: Typhoid fever, pneumonia, urinary tract infections.

4. Relapsing Fever

Pattern: Episodes of fever followed by periods without fever, recurring every few days.

Common in: Borrelia infections (relapsing fever), malaria, and Hodgkin’s disease.

5. Pel-Ebstein Fever

Pattern: Cyclical fever with periods of high fever lasting 3–10 days, followed by an afebrile (fever-free) period of a similar length.

Common in: Hodgkin’s lymphoma.

6. Low-Grade Fever

Pattern: Slightly elevated body temperature, generally between 37.5°C (99.5°F) and 38°C (100.4°F).

Common in: Viral infections, mild infections, autoimmune diseases.

7. High-Grade Fever

Pattern: Body temperature over 39°C (102.2°F).

Common in: Serious infections like influenza, dengue, and bacterial infections.

8. Hyperpyrexia

Pattern: Extremely high fever, typically above 41.5°C (106.7°F).

Common in: Severe infections, heat stroke, or brain hemorrhage.

9. Febrile Seizures

Pattern: Fever accompanied by convulsions, often seen in children.

Common in: High fever due to viral or bacterial infections in young children.