Chemotherapy-Induced Neutropenia: Symptoms, Causes, Treatment

Infection risk depends on the absolute neutrophil count, the depth of the decrease and its duration, not the total white-cell count alone. Timing varies between treatment regimens.

Related reading: Low platelets and bleeding during chemotherapy.

Possible infection signs include fever, chills, sore throat, cough, painful urination or redness around a catheter. Inflammation may be subtle despite a serious infection.

Chemotherapy can suppress bone-marrow production. Cancer, infections or other medicines may also contribute, so every low count should be interpreted in context.

Risk depends on regimen intensity, age, other illnesses, nutrition and previous episodes. Growth-factor prevention is not automatically appropriate for everyone receiving chemotherapy.

A blood count with differential measures neutrophils. Fever may require cultures and tests for an infection source, without delaying necessary urgent treatment.

Febrile neutropenia requires rapid assessment and appropriate antimicrobial treatment. The team may adjust chemotherapy and use white-cell growth factors for selected patients based on risk.

Infection may progress to sepsis, hospitalization or treatment delays. Early detection is more useful than relying on a particular food or supplement to raise counts.

Use good hand, mouth and catheter hygiene, follow food-safety advice and avoid close contact with people who have infections. Do not self-start preventive antibiotics or growth-factor injections.