Non-allergic Rhinitis Indian Medical PG Practice Questions and MCQs
Practice Indian Medical PG questions for Non-allergic Rhinitis. These multiple choice questions (MCQs) cover important concepts and help you prepare for your exams.
Non-allergic Rhinitis Indian Medical PG Question 1: Vidian neurectomy is used for the treatment of?
- A. Chronic vasomotor rhinitis (Correct Answer)
- B. Meniere's disease
- C. Otosclerosis
- D. Benign positional paroxysmal vertigo
Non-allergic Rhinitis Explanation: ***Chronic vasomotor rhinitis***
- **Vidian neurectomy** is a surgical procedure that targets the **vidian nerve** (also known as the **nerve of the pterygoid canal**), which carries parasympathetic fibers to the nasal mucosa.
- By severing these fibers, the procedure aims to reduce the excessive nasal secretions and congestion characteristic of **vasomotor rhinitis**.
*Benign positional paroxysmal vertigo*
- This condition is primarily treated with **canalith repositioning maneuvers** (e.g., Epley maneuver), which aim to displace otoconia from the semicircular canals.
- Surgical intervention is rarely required and, if so, would typically involve **posterior semicircular canal occlusion**, not vidian neurectomy.
*Meniere's disease*
- Management often involves dietary modifications, medications (e.g., diuretics, anti-emetics), and, in severe cases, procedures like **endolymphatic sac decompression** or **labyrinthectomy**.
- **Vidian neurectomy** is not a treatment for the fluctuating hearing loss, vertigo, and tinnitus associated with Meniere's disease.
*Otosclerosis*
- The primary treatment for this condition, characterized by abnormal bone growth in the middle ear causing conductive hearing loss, is **stapedectomy** with prosthesis placement.
- **Vidian neurectomy** has no role in addressing the bony pathology of otosclerosis.
Non-allergic Rhinitis Indian Medical PG Question 2: Which of the following is a predisposing factor for nasal myiasis?
- A. Allergic rhinitis
- B. Vasomotor rhinitis
- C. Atrophic rhinitis (Correct Answer)
- D. Rhinitis medicamentosa
Non-allergic Rhinitis Explanation: ***Atrophic rhinitis***
- **Atrophic rhinitis** leads to thinning and drying of the nasal mucosa, creating a favorable environment for **fly larvae (maggots)** to infest.
- The **crusting and foul odor** associated with atrophic rhinitis can attract flies, making the nasal cavity susceptible to myiasis.
*Allergic rhinitis*
- Characterized by **inflammation and watery discharge** due to allergen exposure. It does not create the tissue damage or conducive environment for myiasis.
- While it causes nasal symptoms, it generally **does not involve tissue necrosis** or open lesions that would attract flies for oviposition.
*Vasomotor rhinitis*
- Involves **non-allergic triggers** causing nasal congestion, sneezing, and runny nose, often due to autonomic nervous system dysfunction.
- There is **no tissue destruction or mucosal atrophy** that would predispose to myiasis.
*Rhinitis medicamentosa*
- Results from **overuse of topical decongestant sprays**, leading to rebound congestion and chronic inflammation.
- While it causes nasal irritation, it does **not typically involve the extensive mucosal damage or open wounds** that attract flies for myiasis.
Non-allergic Rhinitis Indian Medical PG Question 3: A 30-year-old woman with a history of allergic rhinitis presents with bilateral watery nasal discharge and itchy eyes. What is the most appropriate first-line treatment?
- A. Nasal saline irrigation
- B. Antibiotics
- C. Oral antihistamine
- D. Intranasal corticosteroids (Correct Answer)
Non-allergic Rhinitis Explanation: **Intranasal corticosteroids**
- **Intranasal corticosteroids** are considered the **first-line treatment** for allergic rhinitis due to their broad anti-inflammatory effects on nasal mucosa [1].
- They effectively reduce symptoms such as **nasal congestion**, **rhinorrhea**, **sneezing**, and **itching** [1].
*Nasal saline irrigation*
- **Nasal saline irrigation** can help clear irritants and mucus from the nasal passages, providing symptomatic relief.
- However, it is primarily an **adjunctive therapy** and not the most potent first-line treatment for managing moderate to severe allergic rhinitis symptoms alone.
*Antibiotics*
- **Antibiotics** are used to treat bacterial infections, which are not indicated in this case as the symptoms (watery discharge, itchy eyes) are classic for **allergic rhinitis**, not a bacterial infection.
- Unnecessary antibiotic use contributes to **antibiotic resistance** and provides no benefit for allergic conditions.
*Oral antihistamine*
- **Oral antihistamines** are effective for relieving sneezing, itching, and rhinorrhea in allergic rhinitis [1].
- While useful, intranasal corticosteroids generally offer **superior efficacy**, particularly for nasal congestion, and are often preferred as initial monotherapy for persistent symptoms [1].
Non-allergic Rhinitis Indian Medical PG Question 4: How do corticosteroids reduce symptoms of allergic rhinitis?
- A. inhibit histamine release from mast cells.
- B. decrease prostaglandin production.
- C. block leukotriene receptors.
- D. reduce inflammation by inhibiting phospholipase A2. (Correct Answer)
Non-allergic Rhinitis Explanation: ***reduce inflammation by inhibiting phospholipase A2***
- Corticosteroids exert their anti-inflammatory effects by inhibiting **phospholipase A2**, an enzyme crucial for releasing arachidonic acid from cell membranes.
- This inhibition in turn prevents the synthesis of various inflammatory mediators, including **prostaglandins** and **leukotrienes**, thereby reducing the symptoms of allergic rhinitis.
*inhibit histamine release from mast cells.*
- While corticosteroids can stabilize mast cell membranes over time, their primary mechanism of action in allergic rhinitis is not the direct, immediate inhibition of **histamine release**.
- **Antihistamines** are specifically designed to block the effects of histamine or reduce its release.
*decrease prostaglandin production.*
- Corticosteroids do decrease **prostaglandin production**, but this is a *downstream effect* of their inhibition of phospholipase A2, which is the more direct and overarching mechanism.
- Non-steroidal anti-inflammatory drugs (NSAIDs) primarily inhibit **cyclooxygenase (COX) enzymes** to reduce prostaglandin synthesis.
*block leukotriene receptors.*
- Blocking **leukotriene receptors** is the mechanism of action for **leukotriene receptor antagonists** (e.g., montelukast), not corticosteroids.
- Corticosteroids reduce the *production* of leukotrienes by inhibiting phospholipase A2, rather than directly blocking their receptors.
Non-allergic Rhinitis Indian Medical PG Question 5: What is the most likely finding in the CT image of the left maxillary sinus in a patient with a history of allergic rhinitis?
- A. Ground-glass opacity (Correct Answer)
- B. Honeycomb appearance
- C. Onion peel appearance
- D. Double density
Non-allergic Rhinitis Explanation: ***Ground-glass opacity***
- This image shows diffuse opacification of the left maxillary sinus with a characteristic **ground-glass appearance**, which is often associated with allergic fungal rhinosinusitis (AFRS), a condition that can complicate allergic rhinitis.
- The patient's history of **allergic rhinitis** makes AFRS a strong consideration, and the CT finding of ground-glass opacity within the sinus lumen is a classic imaging feature of this condition, representing fungal elements and mucin.
*Honeycomb appearance*
- A **honeycomb appearance** on CT is typically seen in the lungs and indicates **pulmonary fibrosis**, characterized by clustered cystic airspaces with thickened walls.
- This finding is not associated with paranasal sinus pathology, especially not with allergic rhinitis or its common complications.
*Onion peel appearance*
- The **onion peel appearance** on imaging refers to periosteal reaction with multiple concentric layers of new bone formation.
- This is a hallmark feature of conditions like **Ewing sarcoma** and chronic osteomyelitis, primarily affecting bone, not the soft tissue or mucosal lining of a sinus in the context of allergic rhinitis.
*Double density*
- **Double density** is a term primarily used in echocardiography to describe specific findings related to left atrial enlargement, or occasionally in chest radiography where it might represent superimposed densities.
- This term does not describe a finding relevant to paranasal sinus pathology on CT imaging.
Non-allergic Rhinitis Indian Medical PG Question 6: In which condition is Young's operation performed?
- A. Allergic rhinitis
- B. Vasomotor rhinitis
- C. Lupus vulgaris
- D. Atrophic rhinitis (Correct Answer)
Non-allergic Rhinitis Explanation: ***Atrophic rhinitis***
- **Young's operation** is a surgical procedure specifically designed to treat severe cases of **atrophic rhinitis**, aiming to narrow the nasal cavity and promote mucosal regeneration.
- Involves **closing the nostrils temporarily** for several months to allow healing and reduce crusting and foul odor associated with the condition.
*Allergic rhinitis*
- This condition is managed primarily with **antihistamines**, **nasal corticosteroids**, and allergen avoidance, not surgical methods like Young's operation.
- It is an **inflammatory response** to allergens, causing sneezing, itching, and rhinorrhea, which is distinct from the mucosal atrophy seen in atrophic rhinitis.
*Vasomotor rhinitis*
- Vasomotor rhinitis is characterized by **non-allergic triggers** like temperature changes or irritants, leading to nasal congestion and rhinorrhea.
- Treatment typically involves **topical nasal sprays** (e.g., ipratropium bromide) or lifestyle modifications, not **Young's operation**.
*Lupus vulgaris*
- Lupus vulgaris is a form of **cutaneous tuberculosis** affecting the skin, primarily treated with **anti-tubercular drugs**, not a nasal surgical procedure.
- It presents as chronic, progressive skin lesions and is unrelated to nasal cavity disorders.
Non-allergic Rhinitis Indian Medical PG Question 7: Young's operation is done for:
- A. Allergic rhinitis
- B. Vasomotor rhinitis
- C. Atrophic rhinitis (Correct Answer)
- D. Antrochoanal polyp
Non-allergic Rhinitis Explanation: ***Atrophic rhinitis***
- **Young's operation** is a surgical procedure specifically designed to treat **atrophic rhinitis**.
- The goal of the surgery is to narrow the nasal passages by creating a **synechia** (adhesion) to reduce airflow and improve the humidification and temperature of inspired air.
*Allergic rhinitis*
- Allergic rhinitis is primarily managed with **medical therapy**, including antihistamines, nasal corticosteroids, and allergen avoidance.
- Surgical intervention, if considered, typically involves procedures like turbinate reduction, not Young's operation, and is less common for this condition.
*Vasomotor rhinitis*
- Vasomotor rhinitis is a **non-allergic, non-infectious condition** characterized by fluctuating nasal congestion and rhinorrhea, often triggered by irritants or temperature changes.
- Treatment usually involves **medical management** with anticholinergics or nasal corticosteroids, and sometimes turbinate reduction, but not Young's operation.
*Antrochoanal polyp*
- An antrochoanal polyp is a benign growth originating in the **maxillary sinus** and extending into the choana.
- The primary treatment is **surgical removal**, typically via endoscopic sinus surgery, which is distinct from Young's operation.
Non-allergic Rhinitis Indian Medical PG Question 8: Atrophic dry nasal mucosa, extensive encrustations, and a woody hard external nose are most suggestive of:
- A. Bacteroides
- B. Staphylococcus aureus
- C. Peptostreptococcus
- D. Klebsiella pneumoniae (Correct Answer)
Non-allergic Rhinitis Explanation: ***Klebsiella pneumoniae***
- This constellation of symptoms—**atrophic dry nasal mucosa**, **extensive encrustations**, and a **woody hard external nose**—is characteristic of **primary atrophic rhinitis (ozena)** caused by *Klebsiella pneumoniae* subspecies *ozaenae*.
- **Ozena** presents with the classic triad of **progressive nasal mucosal atrophy**, **foul-smelling greenish crusts**, and **anosmia** due to destruction of olfactory epithelium.
- The **woody hard external nose** suggests either advanced ozena with fibrosis or **rhinoscleroma** (caused by *Klebsiella rhinoscleromatis*), both of which are Klebsiella-related chronic granulomatous conditions.
- *K. pneumoniae* subspecies *ozaenae* is the **classic etiological agent** for this severe destructive form of atrophic rhinitis.
*Staphylococcus aureus*
- *S. aureus* causes **rhinitis sicca anterior** (anterior nasal vestibulitis), characterized by crusting and inflammation **limited to the anterior nasal vestibule**.
- Unlike ozena, S. aureus infection does **not cause progressive atrophy** of the entire nasal mucosa or the extensive encrustations throughout the nasal cavity described here.
- The **woody hard external nose** is not a feature of staphylococcal nasal infections, which remain superficial.
*Peptostreptococcus*
- **Peptostreptococcus** species are anaerobic bacteria typically involved in **polymicrobial infections** such as chronic sinusitis, dental abscesses, or deep neck space infections.
- They are **not primary pathogens** in chronic atrophic rhinitis and do not cause the specific progressive nasal atrophy and external nasal changes described.
*Bacteroides*
- **Bacteroides** species are obligate anaerobes that are part of the normal gut flora and commonly cause **intra-abdominal infections** and abscesses.
- They are **not associated** with chronic rhinitis, nasal mucosal atrophy, or the external nasal deformities characteristic of ozena or rhinoscleroma.
Non-allergic Rhinitis Indian Medical PG Question 9: Which of the following are early mediators of allergic rhinitis?
- A. Leukotrienes
- B. Interleukin-4
- C. Interleukin-5
- D. Platelet-activating factor and bradykinin (Correct Answer)
Non-allergic Rhinitis Explanation: ### Explanation
Allergic rhinitis is a Type I hypersensitivity reaction occurring in two distinct phases: the **Early Phase** (within minutes) and the **Late Phase** (4–8 hours later).
**Why Option D is Correct:**
The early phase is triggered when an allergen cross-links IgE antibodies on the surface of **mast cells**, leading to immediate degranulation. This releases **pre-formed mediators** and rapidly synthesized lipid mediators.
* **Histamine** is the primary mediator.
* **Platelet-activating factor (PAF), Bradykinin, and Prostaglandin D2** are also released during this immediate window, causing vasodilation, increased vascular permeability (edema), and stimulation of sensory nerves (itching/sneezing).
**Why Other Options are Incorrect:**
* **A. Leukotrienes:** While Cysteinyl Leukotrienes (CysLTs) are produced during the early phase, they are most characteristic of the transition to and maintenance of the **Late Phase** response, contributing significantly to prolonged nasal congestion.
* **B & C. Interleukin-4 and Interleukin-5:** These are **cytokines** produced by Th2 lymphocytes. They are involved in the **Late Phase** response. IL-4 promotes IgE isotype switching, while IL-5 is the primary factor for **eosinophil** recruitment and activation.
**NEET-PG High-Yield Pearls:**
1. **Early Phase (Minutes):** Mediated by Mast cells. Key symptoms: Sneezing, itching, rhinorrhea. Key mediator: Histamine.
2. **Late Phase (Hours):** Mediated by Eosinophils, Basophils, and Th2 cells. Key symptom: Nasal congestion.
3. **Gold Standard Diagnosis:** Skin Prick Test (detects specific IgE).
4. **Pharmacology Link:** Antihistamines work best on early-phase symptoms (itch/sneeze), while Intranasal Steroids are the most effective treatment for late-phase symptoms (congestion) because they inhibit cytokine release.
Non-allergic Rhinitis Indian Medical PG Question 10: Which of the following preformed toxins is involved in the mechanism of allergic rhinitis?
- A. Histamine (Correct Answer)
- B. Leukotriene
- C. TXA2
- D. PGD2
Non-allergic Rhinitis Explanation: Allergic rhinitis is a **Type I Hypersensitivity reaction** mediated by IgE antibodies. When an allergen cross-links IgE on the surface of mast cells, it triggers **degranulation**, releasing two types of chemical mediators: **Preformed mediators** (stored in granules) and **Newly synthesized mediators** (produced after activation).
### Why Histamine is Correct
**Histamine** is the primary **preformed mediator** stored in the granules of mast cells and basophils. Upon degranulation, it is released immediately (within minutes), causing the "Early Phase" symptoms of allergic rhinitis: vasodilation, increased capillary permeability (edema/nasal block), and stimulation of sensory nerves (itching/sneezing).
### Why Other Options are Incorrect
* **Leukotrienes (B):** These are **newly synthesized** mediators derived from arachidonic acid via the lipoxygenase pathway. While potent (causing mucus secretion and congestion), they are produced *after* mast cell activation and are not pre-stored.
* **TXA2 (Thromboxane A2) (C):** This is a product of the cyclooxygenase pathway primarily involved in platelet aggregation and vasoconstriction; it plays a minimal role in the pathophysiology of allergic rhinitis.
* **PGD2 (Prostaglandin D2) (D):** Like leukotrienes, PGD2 is a **newly synthesized** mediator produced via the cyclooxygenase pathway. It contributes to late-phase inflammation but is not preformed.
### NEET-PG High-Yield Pearls
* **Early Phase Response:** Mediated by **Histamine** (Preformed). Occurs within minutes.
* **Late Phase Response:** Mediated by **Leukotrienes, PGD2, and Cytokines**. Occurs 4–8 hours later; characterized by eosinophil infiltration.
* **Drug of Choice:** Intranasal corticosteroids are the most effective maintenance therapy for allergic rhinitis.
* **Gold Standard Test:** Skin Prick Test (SPT) is used to identify specific allergens.
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