**Question:** Allergic rhinitis treatment includes all except which of the following options?

**Core Concept:** Allergic rhinitis is a condition characterized by inflammation of the nasal mucosa due to an immune response to an allergen. Treatment aims to alleviate symptoms and prevent further inflammation.

**Why the Correct Answer is Right:** Allergic rhinitis treatment typically includes antihistamines, intranasal corticosteroids, intranasal cromolyn sodium, and leukotriene receptor antagonists. The correct answer is "C" (Leukotriene receptor antagonists) because they are specifically used to treat asthma, not allergic rhinitis. Intranasal corticosteroids are a more appropriate choice for allergic rhinitis.

**Why Each Wrong Option is Incorrect:**

A. Intranasal Corticosteroids: These are effective in treating allergic rhinitis symptoms due to their anti-inflammatory properties.
B. Antihistamines: Although they help control symptoms like nasal congestion, they are not as effective as intranasal corticosteroids in treating allergic rhinitis.
D. Cromolyn sodium: Intravenous administration of cromolyn sodium is used for asthma treatment, not allergic rhinitis. Intranasal cromolyn sodium is sometimes used as an alternative to corticosteroids, but it is not as potent in reducing inflammation.

**Clinical Pearl:** Intranasal corticosteroids are a cornerstone in allergic rhinitis treatment due to their strong anti-inflammatory effects in reducing nasal inflammation and controlling symptoms.

**Correct Answer:** C. Leukotriene receptor antagonists

**Explanation:** Leukotriene receptor antagonists are drugs used for treating asthma and not allergic rhinitis. Intranasal corticosteroids are more effective in managing the inflammation and symptoms associated with allergic rhinitis than leukotriene receptor antagonists.