Type of disease: Rare conditions
Neutropenia is a disorder in which individuals have an abnormally low count of neutrophils, a type of white blood cell that helps fight off infections. The low count can be caused by cancer, viral infections, autoimmune disorders or drugs that damage the function of bone marrow or neutrophil cells. The lower the neutrophil count, the more vulnerable an individual is to infection or sickness. Common symptoms of neutropenia include fevers and frequent infections, which can result in mouth ulcers, diarrhea, a burning sensation when urinating, unusual redness, pain, or a sore throat.