Defined usually as peripheral eosinophil count  >0.5 x 109/L
Eosinophils normally comprise <7% of total WBC count
Eosinophilia
Allergic reaction or other hypersensitivity/atopic state
Leukopenia
Urticaria, atopic dermatitis, asthma, drug reaction/hypersensitivity
Thrombocytopenia
DRESS syndrome, drug-induced
Thrombocytosis
Parasitic infection