Thanks for writing your query.Eosinophilia
is a condition in which the eosinophil cell count increases than the normal range(0-6).
It is usually seen in allergic conditions and worm infestation.
You should get following investigations done :-
1. Complete Blood Count
2. Absolute Eosinophil count
3. Throat swab culture.
You can take an antihistamine like cetrizine
10 mg along with an antibiotic according to the reports of the investigations mentioned above.
Also get yourself clinically examined and investigated for proper medical management.
I hope this is helpful to you.