In Allergic rhinitis, nasal mucosa is –
**Core Concept**
Allergic rhinitis is a type of respiratory allergy characterized by an exaggerated immune response to inhaled allergens, leading to inflammation and symptoms such as sneezing, runny nose, and nasal congestion. The nasal mucosa plays a crucial role in the pathophysiology of allergic rhinitis.
**Why the Correct Answer is Right**
The nasal mucosa in allergic rhinitis is characterized by an increase in **mucous glands**, **vasodilation**, and **edema**, which leads to increased mucus production and nasal congestion. This is due to the release of histamine and other mediators from **mast cells**, which are activated by the binding of allergens to IgE antibodies on their surface. The increased permeability of the nasal mucosa also leads to the migration of **eosinophils** and **lymphocytes**, which contribute to the inflammatory response.
**Why Each Wrong Option is Incorrect**
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**Clinical Pearl / High-Yield Fact**
A key feature of allergic rhinitis is the **cross-reactivity** between different allergens, which can lead to symptoms triggered by multiple allergens. For example, patients allergic to ragweed pollen may also experience symptoms when exposed to other plants in the same family.
**Correct Answer:** Not provided (please provide the correct answer for the question)