What are the symptoms of neutropenia?

Neutropenia is...... Divided by severity: <500 is severe, 500-1000 moderate and 1000-1500 mild. Pts with severe neutropenia, for whatever reason, are at increased risk for life threatening infections, and symptoms vary for folks across this continuum. Mucosal erosions and gingival inflammation are common. The main thing to be concerned about is the infection risk, and of course discerning cause so it can be rx'd.
Variable. Maybe nothing. Chronic neutropenia can have symptoms of recurrent or unusual infections, gingivitis, recurrent fevers. It depends on how low the neutrophil count is.