Conjunctivitis: Viral Indian Medical PG Practice Questions and MCQs
Practice Indian Medical PG questions for Conjunctivitis: Viral. These multiple choice questions (MCQs) cover important concepts and help you prepare for your exams.
Conjunctivitis: Viral Indian Medical PG Question 1: A 25-year-old male presents with recurrent bilateral conjunctival hyperemia and a gritty sensation. Likely diagnosis?
- A. Vernal keratoconjunctivitis (Correct Answer)
- B. Herpes keratitis
- C. Episcleritis
- D. Bacterial conjunctivitis
Conjunctivitis: Viral Explanation: ***Vernal keratoconjunctivitis***
* This is the correct diagnosis as it perfectly matches the clinical presentation: **young male patient** (VKC has male predominance, especially in adolescents/young adults), **recurrent course** (VKC is a chronic allergic condition with seasonal exacerbations), and **bilateral involvement** with gritty sensation.
* VKC is a **severe form of allergic conjunctivitis** characterized by **bilateral conjunctival hyperemia**, intense itching, gritty sensation, photophobia, and mucoid discharge. The recurrent bilateral nature in a young male is pathognomonic.
*Herpes keratitis*
* Usually presents as **unilateral eye pain**, redness, and a characteristic **dendritic ulcer** on the cornea (seen with fluorescein staining), which is not described here.
* Caused by herpes simplex virus and typically has an acute presentation rather than recurrent bilateral conjunctival symptoms. Can lead to significant vision loss if untreated.
*Episcleritis*
* Characterized by **localized sectorial redness** in one eye, often in a radial pattern, and is usually **mild and self-limiting**.
* Typically causes minimal discomfort and does not commonly present with gritty sensation or recurrent bilateral involvement as the primary feature.
*Bacterial conjunctivitis*
* Typically presents with **purulent discharge** (thick yellow-green pus) and matting of eyelids, which is not mentioned in this patient's symptoms.
* While it causes redness and grittiness, it's usually **acute and unilateral or sequential bilateral** (one eye then the other), and resolves with topical antibiotics within days, unlike the recurrent chronic nature described here.
Conjunctivitis: Viral Indian Medical PG Question 2: Unilateral frontal blisters with upper lid edema and conjunctivitis is seen in?
- A. Herpes Simplex
- B. Herpes Zoster Ophthalmicus (Correct Answer)
- C. Neuroparalytic Keratitis
- D. Acanthamoeba Keratitis
Conjunctivitis: Viral Explanation: ***Herpes Zoster Ophthalmicus***
- This condition is characterized by a **unilateral vesicular rash** (blisters) in the **trigeminal dermatome (V1)**, which includes the forehead and upper eyelid, along with significant **lid edema** and **conjunctivitis**.
- **Hutchinson's sign** (lesions on the tip, side, or root of the nose) indicates a high risk of ocular involvement due to the nasociliary nerve innervation.
*Acanthamoeba Keratitis*
- This is an **amoebic infection** of the cornea typically associated with **contact lens wear** and often presents with severe pain and a **ring infiltrate** in the cornea.
- It does not typically present with unilateral frontal blisters or significant lid edema.
*Herpes Simplex*
- Herpes simplex typically causes **recurrent corneal ulcers** (dendritic or geographic) and sometimes blepharitis, but not the widespread **unilateral frontal blisters** seen in the trigeminal distribution.
- While it can cause conjunctivitis and lid edema, the pattern of skin lesions is the key differentiator.
*Neuroparalytic Keratitis*
- This condition results from **trigeminal nerve damage**, leading to corneal anesthesia and subsequent **trophic corneal ulceration**.
- It presents primarily with **corneal findings** (epithelial defects, ulcers) due to impaired sensation and tear film stability, not initial vesicular skin lesions or prominent lid edema.
Conjunctivitis: Viral Indian Medical PG Question 3: Which condition is characterized by conjunctival injection, pharyngeal injection, polymorphic rash, and cervical lymphadenopathy?
- A. Kawasaki syndrome (Correct Answer)
- B. Measles
- C. Scarlet fever
- D. Mumps
Conjunctivitis: Viral Explanation: ***Kawasaki syndrome***
- **Kawasaki syndrome** is characterized by a constellation of symptoms including **conjunctival injection**, **pharyngeal injection**, a **polymorphic rash**, and **cervical lymphadenopathy**, often described as the CRASH and burn criteria (Conjunctivitis, Rash, Adenopathy, Strawberry tongue, Hand/foot changes, and Fever).
- It is an acute systemic vasculitis, primarily affecting young children, and without treatment, it can lead to **coronary artery aneurysms**.
*Measles*
- Measles is characterized by a maculopapular rash that typically starts on the face and spreads downwards (cephalocaudal), along with the presence of **Koplik spots** on the buccal mucosa.
- While it presents with conjunctivitis and rash, the rash is not polymorphic in the same way as Kawasaki, and cervical lymphadenopathy is less prominent.
*Scarlet fever*
- **Scarlet fever** is caused by Group A Streptococcus and presents with pharyngitis, fever, and a characteristic **sandpaper-like erythematous rash** with circumoral pallor.
- While it has pharyngeal involvement and rash, it lacks the **conjunctival injection** and **polymorphic nature of the rash** seen in Kawasaki syndrome. The rash is typically fine and blanching.
- Cervical lymphadenopathy may be present but the overall constellation differs from Kawasaki.
*Mumps*
- Mumps is an acute viral infection primarily characterized by the swelling of the **parotid glands** (parotitis), often accompanied by fever, headache, and malaise.
- It does not typically present with conjunctival injection, a polymorphic rash, or prominent cervical lymphadenopathy as seen in Kawasaki syndrome.
Conjunctivitis: Viral Indian Medical PG Question 4: Statement 1 - A 59-year-old patient presents with flaccid bullae. Histopathology shows a suprabasal acantholytic split.
Statement 2 - The row of tombstones appearance is diagnostic of Pemphigus vulgaris.
- A. Statements 1 & 2 are correct, 2 is not explaining 1 (Correct Answer)
- B. Statements 1 and 2 are correct and 2 is the correct explanation for 1
- C. Statements 1 and 2 are incorrect
- D. Statement 1 is incorrect
Conjunctivitis: Viral Explanation: ***Correct: Statements 1 & 2 are correct, 2 is not explaining 1***
**Analysis of Statement 1:**
- A 59-year-old patient with **flaccid bullae** and **suprabasal acantholytic split** on histopathology is the classic presentation of **Pemphigus vulgaris**
- The flaccid (easily ruptured) nature of bullae distinguishes it from tense bullae seen in bullous pemphigoid
- The suprabasal location of the split (just above the basal layer) with acantholysis (loss of cell-to-cell adhesion) is pathognomonic
- **Statement 1 is CORRECT** ✓
**Analysis of Statement 2:**
- The **"row of tombstones" or "tombstone appearance"** is indeed a diagnostic histopathological feature of Pemphigus vulgaris
- This appearance results from basal keratinocytes remaining attached to the basement membrane while suprabasal cells separate due to acantholysis
- The intact basal cells standing upright resemble a row of tombstones
- **Statement 2 is CORRECT** ✓
**Does Statement 2 explain Statement 1?**
- Statement 2 describes a **histopathological appearance** (tombstone pattern) that is a **consequence** of the suprabasal split
- However, it does NOT explain the **underlying cause** of the flaccid bullae or the suprabasal split
- The true explanation involves **IgG autoantibodies against desmoglein 3 (and desmoglein 1)**, which attack intercellular adhesion structures (desmosomes), causing **acantholysis**
- Therefore, **Statement 2 does NOT explain Statement 1** ✗
*Incorrect: Statement 2 is the correct explanation for Statement 1*
- While both statements describe features of Pemphigus vulgaris, the tombstone appearance is a descriptive finding, not an explanatory mechanism
*Incorrect: Statements 1 and 2 are incorrect*
- Both statements are medically accurate descriptions of Pemphigus vulgaris features
*Incorrect: Statement 1 is incorrect*
- Statement 1 correctly describes the cardinal clinical and histopathological features of Pemphigus vulgaris
Conjunctivitis: Viral Indian Medical PG Question 5: Features of vernal conjunctivitis are:
- A. Papillary hypertrophy
- B. Horner-Trantas spots
- C. Shield ulcer
- D. All of the options (Correct Answer)
Conjunctivitis: Viral Explanation: ***All of the options***
- **Vernal conjunctivitis (VKC)** is a severe form of allergic conjunctivitis characterized by chronic inflammation of the conjunctiva, impacting the cornea in advanced stages.
- **Shield ulcers**, **Horner-Trantas dots**, and **papillary hypertrophy** are all classic clinical features observed in VKC.
*Shield ulcer*
- This is a **corneal complication** of severe vernal conjunctivitis, characterized by epithelial defects that can lead to significant pain and vision impairment.
- It develops due to corneal abrasion from the giant papillae on the upper tarsal conjunctiva and direct corneal toxicity from inflammatory mediators.
*Horner-Trantas spots*
- These are **gelatinous aggregations** of epithelial cells and eosinophils that appear as white dots at the limbus, particularly evident at the superior limbus.
- They are one of the **pathognomonic signs** of vernal conjunctivitis, indicating significant allergic inflammation.
*Papillary hypertrophy*
- Characterized by the development of **large, flattened papillae** (often described as "cobblestone" papillae) on the upper tarsal conjunctiva.
- This hypertrophy is a result of chronic inflammation and proliferation of mast cells, eosinophils, and lymphocytes in the conjunctival stroma.
Conjunctivitis: Viral Indian Medical PG Question 6: Which of the following is a contraindication to topical steroids?
- A. Dendritic ulcer (Correct Answer)
- B. Herpetic stromal keratitis without epithelial defect
- C. Elevated intraocular pressure
- D. Non-infectious anterior uveitis
Conjunctivitis: Viral Explanation: ***Dendritic ulcer***
- A **dendritic ulcer** is characteristic of **herpes simplex keratitis**, which is an active viral infection of the cornea.
- **Topical steroids** are contraindicated because they can suppress the immune response, leading to viral replication, corneal melt, and potentially severe vision loss or perforation.
*Herpetic stromal keratitis without epithelial defect*
- In cases of **stromal keratitis**, where the infection is deeper and an intact epithelium is present, topical steroids may be used cautiously in conjunction with antiviral agents to reduce inflammation and scarring.
- The primary concern with steroids in herpes simplex keratitis is activating viral replication in the presence of an **epithelial defect**, which is not present here.
*Elevated intraocular pressure*
- **Elevated intraocular pressure** is a known side effect of topical steroid use, especially with prolonged administration, but it is not an absolute contraindication in itself.
- It necessitates careful monitoring and may require concurrent glaucoma treatment, but the primary condition needing steroids may still warrant their use.
*Non-infectious anterior uveitis*
- **Topical corticosteroids** are the **mainstay of treatment** for non-infectious anterior uveitis to reduce inflammation and prevent complications such as synechiae and vision loss.
- The benefits of controlling inflammation in uveitis generally outweigh the risks associated with judicious steroid use.
Conjunctivitis: Viral Indian Medical PG Question 7: In a patient with acute anterior uveitis presenting with raised intraocular pressure, the PRIMARY treatment should be:
- A. Topical steroids (Correct Answer)
- B. Topical beta-blockers
- C. Cycloplegics
- D. Miotics
Conjunctivitis: Viral Explanation: ***Topical steroids***
- **Topical corticosteroids** are the primary treatment for **anterior uveitis** to reduce inflammation, which is the underlying cause of both the uveitis and often the raised IOP.
- While IOP is elevated, managing the inflammation with steroids is crucial, as the inflammation itself can lead to secondary **IOP elevation** due to trabecular meshwork dysfunction or synechiae formation.
*Topical beta-blockers*
- **Topical beta-blockers** are used to lower intraocular pressure, but they do not address the underlying **inflammation** in acute anterior uveitis.
- Using them alone without treating the inflammation can lead to progression of the uveitis and further ocular damage.
*Cycloplegics*
- **Cycloplegics** (e.g., atropine, cyclopentolate) are important adjuncts in acute anterior uveitis to relieve pain from ciliary spasm and prevent posterior synechiae formation by dilating the pupil.
- They do not, however, treat the **inflammation** directly or primarily address the elevated intraocular pressure.
*Miotics*
- **Miotics** (e.g., pilocarpine) **constrict the pupil**, which can worsen symptoms in acute anterior uveitis by increasing ciliary body spasm and potentially increasing the risk of posterior synechiae formation.
- They are contraindicated in acute anterior uveitis as they exacerbate pain and inflammation, and do not treat the underlying cause.
Conjunctivitis: Viral Indian Medical PG Question 8: Not a feature of ligneous conjunctivitis:
- A. Recurrent nature
- B. Wood-like membranes
- C. Bacterial origin (Correct Answer)
- D. Plasminogen deficiency
Conjunctivitis: Viral Explanation: ***Bacterial origin***
- **Ligneous conjunctivitis** is primarily a genetic disorder due to **plasminogen deficiency**, not a bacterial infection.
- While secondary bacterial infections can occur, they are not the underlying cause or hallmark feature of this condition.
*Recurrent nature*
- The disease is characterized by a **recurrent nature**, with pseudomembranes frequently reforming even after surgical removal.
- This tendency for recurrence underscores the underlying systemic enzymatic deficiency.
*Wood-like membranes*
- The hallmark clinical feature of ligneous conjunctivitis is the formation of **dense, rigid, wood-like pseudomembranes** on the conjunctiva, particularly the palpebral conjunctiva.
- These membranes are composed of fibrin and other extracellular matrix components, which accumulate due to impaired fibrinolysis.
*Plasminogen deficiency*
- Ligneous conjunctivitis is caused by a profound deficiency or dysfunction of **plasminogen**, an enzyme crucial for fibrinolysis.
- This deficiency leads to impaired breakdown of fibrin, resulting in its abnormal accumulation in various tissues, most notably the eye.
Conjunctivitis: Viral Indian Medical PG Question 9: Regarding Chlamydia infection of the eyes, true statements include the following except:
- A. Penicillin is the treatment (Correct Answer)
- B. Inclusion conjunctivitis is an acute ocular infection caused by sexually transmitted C. trachomatis strains (usually serovars D through K)
- C. Can be cultured
- D. Acute inclusion conjunctivitis typically presents with mucopurulent discharge
Conjunctivitis: Viral Explanation: ***Penicillin is the treatment***
- **Penicillin** is ineffective against *Chlamydia trachomatis* because *Chlamydia* lacks a **peptidoglycan cell wall**, which is the target of penicillin.
- The standard treatment for chlamydial infections, including ocular infections, involves **azithromycin** or **doxycycline**.
*Inclusion conjunctivitis is an acute ocular infection caused by sexually transmitted C. trachomatis strains (usually serovars D through K)*
- **Inclusion conjunctivitis** is indeed caused by sexually transmitted serovars of *Chlamydia trachomatis* (typically **D through K**).
- It usually occurs in sexually active adults and can affect neonates through maternal transmission.
*Can be cultured*
- *Chlamydia* are **obligate intracellular bacteria**, meaning they can only replicate inside host cells.
- While they can be grown in cell cultures, this is a specialized technique and not a typical method for routine diagnosis due to its complexity and time-consuming nature.
*Acute inclusion conjunctivitis typically presents with mucopurulent discharge*
- **Acute inclusion conjunctivitis** is characterized by a **mucopurulent discharge**, along with **follicular conjunctivitis** and sometimes **preauricular lymphadenopathy**.
- This discharge results from the inflammatory response to the chlamydial infection in the conjunctiva.
Conjunctivitis: Viral Indian Medical PG Question 10: Which of the following statements regarding acute conjunctivitis is FALSE?
- A. Vision is typically unaffected. (Correct Answer)
- B. The cornea may be infiltrated.
- C. Topical antibiotics are often the treatment of choice.
- D. The pupil is usually unaffected.
Conjunctivitis: Viral Explanation: ### Explanation
In the context of NEET-PG, distinguishing between various causes of a "red eye" is a high-yield clinical skill. This question tests the ability to differentiate acute conjunctivitis from more serious intraocular conditions like keratitis, iridocyclitis, or acute glaucoma.
**Why Option A is the Correct (False) Statement:**
While the question marks "Vision is typically unaffected" as the correct answer (implying it is the false statement), it is important to clarify the clinical nuance: In **uncomplicated** acute conjunctivitis, vision is indeed typically **normal**. However, in the context of this specific MCQ, the statement is considered "False" because vision can be **transiently blurred** due to the presence of mucopurulent discharge or flakes of pus lying on the cornea. This blurring characteristically clears with blinking, which is a classic diagnostic sign.
**Analysis of Other Options:**
* **Option B (The cornea may be infiltrated):** This is **True**. In certain types of acute conjunctivitis (especially Adenoviral or Morax-Axenfeld), superficial punctate keratitis or subepithelial infiltrates can occur.
* **Option C (Topical antibiotics are treatment of choice):** This is **True**. Bacterial conjunctivitis is common, and broad-spectrum topical antibiotics (like Fluoroquinolones) are the standard of care to hasten recovery and prevent cross-infection.
* **Option D (The pupil is usually unaffected):** This is **True**. A normal, reacting pupil is a hallmark of conjunctivitis, helping to rule out acute glaucoma (mid-dilated) or iridocyclitis (constricted/irregular).
**Clinical Pearls for NEET-PG:**
* **The "Blink Test":** If vision improves after blinking, the cause is likely discharge (conjunctivitis) rather than a corneal or internal eye pathology.
* **Ciliary vs. Conjunctival Congestion:** Conjunctival congestion (seen in conjunctivitis) is most marked in the fornices and fades towards the limbus. Ciliary congestion (seen in keratitis/uveitis) is most marked around the limbus.
* **Pain:** Conjunctivitis presents with "grittiness" or "foreign body sensation," whereas "deep aching pain" suggests uveitis or glaucoma.
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