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periodic neutropenia (PEER-ee-AH-dik noo-troh-PEE-nee-uh)
|A chronic condition that affects neutrophils (a type of white blood cell). In periodic neutropenia, the number of neutrophils in the blood goes in cycles from normal to low and back to normal again. Symptoms include fever, inflamed mucous membranes in the mouth, and infections. Also called cyclic neutropenia.|