Acne and Related Disorders Practice Questions

Q: Potato nose is seen in ?

Acne rosacea. ***Acne rosacea*** - **Potato nose**, also known as **rhinophyma**, is a severe manifestation of **acne rosacea**, characterized by thickened, red, and bumpy skin on the nose. - This condition results from **hyperplasia of sebaceous glands** and connective tissue in the nose, leading to its characteristic bulbous appearance. *Acne vulgaris* - This common skin condition is characterized by **comedones**, **papules**, **pustules**, and sometimes cysts, primarily on the face, chest, and back. - It does **not typically cause rhinophyma** or significant thickening of nasal skin. *Rhinosporoidosis* - This is a **chronic granulomatous fungal infection** affecting mucous membranes, particularly the nose. - While it can cause nasal polyps and masses, it does **not result in the sebaceous gland hyperplasia** and thickened skin characteristic of rhinophyma. *Lupus vulgaris* - Lupus vulgaris is a chronic and progressive form of **cutaneous tuberculosis**, often affecting the face. - It presents with **reddish-brown plaques** and nodules that can ulcerate and scar but does **not lead to the specific nasal hypertrophy** seen in rhinophyma.

Q: A key distinguishing feature of acne rosacea from acne vulgaris is:

Absence of comedone. ***Absence of comedone*** - A key distinguishing feature is the **absence of comedones** (blackheads and whiteheads) in **acne rosacea**, which are characteristic of acne vulgaris. - Rosacea primarily involves **erythema**, telangiectasias, papules, and pustules, often triggered by factors like heat and stress. *Pustule* - While **pustules** can be present in both conditions, they are **more common** and often more inflammatory in acne vulgaris. - In rosacea, pustules often occur on an **erythematous** background without comedones. *Erythema* - **Erythema** (redness) is a prominent feature of **acne rosacea**, particularly central facial erythema, which is less pronounced and less persistent in acne vulgaris. - In rosacea, erythema is often accompanied by **telangiectasias** (visible blood vessels) and flushing. *Papule* - **Papules** are seen in both conditions, but in **acne rosacea**, they tend to be inflammatory and occur without associated comedones. - In acne vulgaris, papules often arise from inflamed **comedones** and can be accompanied by cysts and nodules.

Q: Which of the following statements is true about rhinophyma?

Acne rosacea. ***Acne rosacea*** - **Rhinophyma** is a severe form of **acne rosacea**, characterized by sebaceous gland hypertrophy and connective tissue hyperplasia on the nose. - It specifically represents the **phymatous subtype** of rosacea, which involves thickening of the skin. *Premalignant* - Rhinophyma itself is generally **not considered premalignant** to skin cancer. - While skin cancers like **basal cell carcinoma** can rarely occur within rhinophyma, the condition itself does not inherently transform into malignancy. *Common in alcoholics* - This is a **common misconception**; while often associated with heavy alcohol use, there is no direct causal link. - The development of rhinophyma is primarily driven by the underlying pathogenesis of **rosacea**, not alcohol consumption. *Fungal etiology* - Rhinophyma is primarily an inflammatory skin condition, not caused by **fungal infection**. - Its etiology is complex, involving genetics, environmental triggers, and vascular dysregulation, but **microbial involvement** is typically bacterial (e.g., Demodex mites) rather than fungal.

Q: What is the condition characterized by the hypertrophy of sebaceous glands?

Sebaceous hyperplasia. ***Sebaceous hyperplasia*** - This condition is characterized by the **enlargement (hypertrophy)** of normal sebaceous glands, often appearing as yellowish-white papules with a central umbilication. - It commonly occurs on the **face of older adults**, particularly on the forehead and cheeks, and is a benign condition. *Rhinosporidiosis* - This is a **chronic granulomatous disease** caused by the fungus *Rhinosporidium seeberi*, primarily affecting the **mucous membranes** of the nose and nasopharynx. - It presents as **friable, polypoidal masses** with a characteristic "strawberry-like" appearance due to small white spots (sporangia), not sebaceous gland hypertrophy. *Tubercular infection* - A tubercular infection, particularly cutaneous tuberculosis, can manifest in various forms, including **lupus vulgaris**, scrofuloderma, or tuberculosis cutis verrucosa. - These presentations involve **granulomatous inflammation** and tissue destruction, not isolated hypertrophy of sebaceous glands. *Nasopharyngeal angiofibroma* - This is a **rare, benign, highly vascular tumor** that originates in the nasopharynx, predominantly affecting adolescent males. - It typically presents with symptoms like **epistaxis** and **nasal obstruction**, and is composed of fibrous and vascular tissue, not sebaceous glands.

Q: Which of the following is not a feature of rosacea?

Mucosal ulcerations. ***Mucosal ulcerations*** - **Mucosal ulcerations** are not a characteristic feature of rosacea; rosacea primarily affects the **facial skin**. - Conditions like **Behçet's disease** or **Crohn's disease** are associated with oral or genital mucosal ulcerations, not rosacea. *Flushing* - **Transient facial erythema (flushing)** is a hallmark symptom of rosacea, often triggered by heat, stress, or certain foods. - It is one of the primary diagnostic criteria and often the first symptom to appear. *Telangiectasia* - **Telangiectasias**, or visible small blood vessels, are a common and persistent feature of rosacea, especially in the **erythematotelangiectatic subtype**. - They result from chronic vasodilation and inflammation associated with the condition. *Rhinophyma* - **Rhinophyma**, characterized by skin thickening and irregular nodularity of the nose, is a severe form of **phymatous rosacea**. - While less common, it is a well-recognized and specific manifestation of advanced rosacea.

Q: Rhinophyma is associated with which of the following?

Hypertrophy of sebaceous gland. ***Hypertrophy of sebaceous gland*** - **Rhinophyma** is a **chronic inflammatory skin condition** characterized by progressive enlargement and redness of the nose, primarily due to **hypertrophy of the sebaceous glands**. - It is considered a severe manifestation of **rosacea**, where the glandular and connective tissues become hyperplastic, leading to a bulbous, disfigured appearance. *Infection of hair follicles* - Infections of hair follicles, such as **folliculitis** or **furuncles (boils)**, are acute inflammatory conditions caused by bacteria or fungi. - While these can cause swelling and redness, they do not result in the chronic, progressive sebaceous gland hypertrophy seen in rhinophyma. *Congenital deformity of the nose* - **Congenital deformities** are structural abnormalities present at birth, often due to developmental errors during gestation. - Rhinophyma is an **acquired condition** that develops later in life, typically in adults, and is not present from birth. *Hypertrophy of sweat gland* - **Hypertrophy of sweat glands** (eccrine or apocrine) is not the characteristic feature of rhinophyma. - Conditions involving sweat gland overgrowth are rare and present differently, such as in certain forms of **hidradenitis** or **cystic fibrosis**, and do not lead to the specific nasal disfigurement of rhinophyma.

Q: Benzoyl peroxide acts in acne vulgaris by:

Decreasing bacterial count. ***Decreasing bacterial count*** - **Benzoyl peroxide** is a highly effective topical treatment for acne primarily due to its potent **antimicrobial activity** against *Cutibacterium acnes*, the bacterium implicated in acne pathogenesis. - It works by releasing **free radicals** that disrupt bacterial cell membranes and metabolism, thereby reducing the bacterial load in follicles. *Reduces sebum production* - While sebaceous gland activity is critical in acne, benzoyl peroxide does **not directly reduce sebum production**; retinoids like isotretinoin are known for this effect. - Its primary action is focused on combating bacteria and mildly promoting desquamation rather than affecting **lipid synthesis**. *Acts as a keratolytic agent* - Benzoyl peroxide does possess some **keratolytic activity**, aiding in the shedding of dead skin cells and preventing pore blockage. - However, its keratolytic action is **less pronounced** compared to agents like salicylic acid or tretinoin, and it is not its primary mechanism of action. *Increases epithelial turnover* - While benzoyl peroxide does promote a mild increase in **epithelial cell turnover**, helping to clear clogged pores, it is not its main mechanism of action or defining characteristic. - **Topical retinoids** (e.g., tretinoin, adapalene) are far more effective and primarily used to normalize follicular keratinization and increase cell turnover.

Question 1

Potato nose is seen in ?

Accepted Answer

Acne rosacea

Answer

Acne vulgaris

Answer

Rhinosporoidosis

Answer

Lupus vulgaris

Question 2

A key distinguishing feature of acne rosacea from acne vulgaris is:

Accepted Answer

Absence of comedone

Answer

Pustule

Answer

Erythema

Answer

Papule

Question 3

Which of the following statements is true about rhinophyma?

Accepted Answer

Acne rosacea

Answer

Premalignant

Answer

Common in alcoholics

Answer

Fungal etiology

Question 4

What is the condition characterized by the hypertrophy of sebaceous glands?

Accepted Answer

Sebaceous hyperplasia

Answer

Rhinosporidiosis

Answer

Tubercular infection

Answer

Nasopharyngeal angiofibroma

Question 5

Which of the following is not a feature of rosacea?

Accepted Answer

Mucosal ulcerations

Answer

Flushing

Answer

Telangiectasia

Answer

Rhinophyma

Question 6

Rhinophyma is associated with which of the following?

Accepted Answer

Hypertrophy of sebaceous gland

Answer

Infection of hair follicles

Answer

Congenital deformity of the nose

Answer

Hypertrophy of sweat gland

Question 7

Benzoyl peroxide acts in acne vulgaris by:

Accepted Answer

Decreasing bacterial count

Answer

Reduces sebum production

Answer

Acts as a keratolytic agent

Answer

Increases epithelial turnover

Acne and Related Disorders — MCQs

Acne and Related Disorders — MCQs

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