The symptoms of Eosinophilia vary based on their causes. Eosinophilia caused by asthma symptoms are a wheezing and breathlessness. Eosinophilia caused by a parasitic infection symptoms are abdominal pain, diarrhea, fever, cough and rashes. Eosinophilia caused by a medicinal reaction symptoms are skin rashes. The more rarer symptoms of Eosinophilia are weight loss, night sweats, lymph node enlargement, skin rashes and numbness/tingle due to nerve damage.