A biopsy from a muscle reveals encysted forms of Trichinella spiralis. What type of white blood cell is most likely to be increased in numbers in the peripheral blood of this individual? (AIPG 2010)
a. Eosinophilia can be associated with cutaneous allergic reactions; allergic disorders, such as bronchial asthma or hay fever; Hodgkin’s disease; some skin diseases, such as pemphigus, eczema, and dermatitis herpetiformis; and parasitic infections, such as trichinosis (caused by infection with trichinella spiralis), schistosomiasis, and strongyloidiasis.
b. The most common cause of eosinophilia is probably allergy to drugs such as iodides, aspirin, or sulfonamides, but eosinophilia is also seen in collagen vascular diseases.
c. Marked eosinophilia occurs in hypereosinophilic syndromes (Löffler’s syndrome and idiopathic hypereosinophilic syndrome), which may be treated with corticosteroids.