What blood cell changes are associated with allergies and parasitic infections?

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Question: What blood cell changes are associated with allergies and parasitic infections?

Option 1: Monocytosis
- Monocytosis means an increased number of monocytes. While monocytes can be elevated in certain infections or inflammatory states, they are not the hallmark changes specifically linked to allergies or parasitic infections. Allergic reactions and parasitic infestations are more characteristically associated with eosinophils rather than a prominent monocytic response.

Option 2: Eosinophilia
- Eosinophilia refers to an elevated eosinophil count. This is the classic and well-established hematologic finding in allergic diseases (such as allergic rhinitis, asthma, atopy) and helminthic (parasitic) infections. Eosinophils participate in defense against parasites and are mediators of allergic inflammation, making this option the most accurate association among the choices.

Option 3: Eosinopenia
- Eosinopenia is a decreased eosinophil count. This is not typically seen with allergies or parasitic infections; instead, eosinopenia can occur in acute stress or corticosteroid use and does not reflect the typical pathophysiology of allergic or parasitic responses. Therefore this choice is inconsistent with the question.

Option 4: Monocytopenia
- Monocytopenia is a reduced monocyte count. There is no strong, specific link between monocytopenia and allergic or parasitic conditions. Since the question focuses on the hematologic changes characteristic of those conditions, monocytopenia does not fit as the best association.

Overall, the reasoning centers on recognizing that eosinophils are key players in both allergic reactions and defense against parasites, making eosinophilia the correct and most consistent blood cell change for the given scenarios.

VT120 Assignment: Blood and Lymph - DUE 1/20 BY MIDNIGHT

What blood cell changes are associated with allergies and parasitic infections?

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