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...