Febrile Neutropenia is defined by a single oral temperature of $38.3^\circ\text{C}$ or an elevated temperature sustained over one hour, concurrent with a dangerously low absolute neutrophil count (ANC). This condition is a potentially life-threatening complication, primarily associated with myelo-suppressive chemotherapy regimens, signifying a severe compromise of the body's primary defense against infection.

Rapid, aggressive management is mandatory for suspected **Febrile Neutropenia**, often requiring the immediate initiation of broad-spectrum empirical intravenous antibiotics before pathogen identification. Risk stratification, typically using scoring systems like the MASCC index, helps clinicians determine if initial management can be safely conducted in an outpatient setting or requires immediate hospitalization.

The urgency in treating **Febrile Neutropenia** stems from the rapid progression of infection to septic shock in an immunocompromised host. The absence of sufficient neutrophils means the traditional signs of inflammation, such as pus formation at an infection site, may be minimal or absent, delaying diagnosis. Therefore, fever…