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 is the preformed toxin involved in the mechanism of allergic rhinitis?
- A. Histamine (Correct Answer)
- B. Leukotriene
- C. TXA2
- D. PGD2
Non-allergic Rhinitis Explanation: ### Explanation
The pathophysiology of Allergic Rhinitis is a **Type I Hypersensitivity reaction** mediated by IgE. When an allergen cross-links IgE antibodies on the surface of mast cells, it triggers **degranulation**, leading to the release of two types of inflammatory mediators:
**1. Why Histamine is Correct:**
Histamine is a **preformed mediator** stored in the granules of mast cells and basophils. Upon activation, it is released immediately (within minutes), causing the "Early Phase" response characterized by sneezing, itching, and rhinorrhea. Because it is synthesized and stored *before* the allergic trigger occurs, it is classified as a preformed toxin/mediator.
**2. Why the Other Options are Incorrect:**
* **Leukotrienes (B), TXA2 (C), and PGD2 (D):** These are **newly synthesized mediators** (lipid-derived). They are not stored in granules but are produced *de novo* from arachidonic acid via the cyclooxygenase (COX) or lipoxygenase (LOX) pathways only after the mast cell is activated. These mediators typically contribute to the "Late Phase" response, leading to nasal congestion and sustained inflammation.
### NEET-PG High-Yield Pearls:
* **Early Phase (Minutes):** Primarily mediated by **Histamine**. Clinical features: Sneezing, itching, watery rhinorrhea.
* **Late Phase (4–8 hours):** Mediated by **Leukotrienes (LTC4, LTD4, LTE4)**, Cytokines, and PGD2. Clinical feature: Nasal congestion (due to cellular infiltration, mainly eosinophils).
* **Gold Standard Investigation:** Skin Prick Test (detects specific IgE).
* **Drug of Choice:** Intranasal Corticosteroids (act on both early and late phases).
* **Mast Cell Stabilizer:** Sodium Cromoglycate (prevents degranulation; used prophylactically).
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