Given an abstract, generate a keyword (a noun phrase) that best describes the focus or contribution of the paper. Such keywords can be directly from the given abstract or outside it.
Q: Abstract: A very rare case of eosinophilic granulocytosis of the cerebrospinal fluid (CSF eosinophilia) due to drug allergy caused by the intraventricular administration of gentamicin sulfate is presented with a review of the pertinent literature. An unusual clinical course and clinicoimmunological examination are also described.
A: 
Amikacin