Welcome to your 10. 🧴 Noninfectious Skin Disorders & Generalized Rash Arena — 40 Integrated MCQs
1.
A patient with extensive skin disease has marked generalized redness and scaling. Which complication is particularly important to monitor in severe erythroderma?
2.
A 64-year-old man presents with generalized erythema and scaling. He has tachycardia, peripheral edema and malaise. Which physiological consequence of extensive skin involvement best explains the need for close systemic monitoring?
3.
A 55-year-old man develops rapidly progressive, extensive velvety hyperpigmented plaques in the axillae and neck together with unexplained weight loss. He has no previous metabolic disease. Which approach is most appropriate?
4.
A 19-year-old woman has inflammatory acne involving the face and upper trunk. She has been using topical clindamycin alone for several months with diminishing benefit. Which modification best addresses an important therapeutic concern with prolonged topical antibiotic use?
5.
A hospitalized patient develops a painful widespread eruption with epidermal detachment after starting a high-risk medication. The drug is still being administered when dermatology reviews the patient. What is the most appropriate immediate management principle?
6.
A patient presents with a generalized rash. Examination shows involvement of the oral mucosa, conjunctiva and widespread tender erythematous skin after starting a new drug. Which finding makes a severe cutaneous adverse reaction more concerning?
7.
A child has recurrent itchy eczematous lesions, dry skin and a personal history of allergic rhinitis. In an older child, which distribution is most characteristic?
8.
A 27-year-old woman develops recurrent tender erythematous nodules over both shins accompanied by ankle discomfort. She also reports chronic diarrhea and intermittent abdominal pain. Which associated disorder should be considered?
9.
A patient has recurrent episodes of widespread itchy wheals associated with intermittent angioedema but no hypotension or respiratory compromise. Which drug class is the most appropriate initial pharmacological treatment?
10.
A patient presents with widespread erythema and scaling involving most of the skin surface, associated with malaise and temperature instability. Which dermatological state best describes this presentation?
11.
A healthcare worker develops an eczematous rash on both hands after repeated exposure to detergents and frequent hand washing. Which type of eczema is most likely?
12.
A 35-year-old man presents with greasy yellowish scaling over the scalp, eyebrows and nasolabial folds. Which diagnosis is most likely?
13.
A 29-year-old man has intensely pruritic violaceous papules on the wrists and ankles together with white lacy markings on the buccal mucosa. Which finding most strongly supports the suspected diagnosis?
14.
A patient develops fever, painful widespread erythematous skin lesions and prominent oral erosions a few days after starting a new medication. Which condition should be considered urgently?
15.
A middle-aged patient develops sudden extensive velvety hyperpigmented thickening of the neck and axillae without a previous history of similar lesions. Which general clinical principle is most appropriate?
16.
A 52-year-old woman presents with painful oral erosions followed several weeks later by fragile skin blisters. Biopsy shows suprabasal separation caused by loss of adhesion between keratinocytes. Which target is most closely involved in the disease mechanism?
17.
A 26-year-old woman presents with pruritic erythematous vesicular lesions confined to the area beneath a metal wristwatch. The eruption repeatedly occurs after wearing the watch. Which mechanism best explains this condition?
18.
A 24-year-old woman develops multiple itchy wheals over her trunk and limbs. Individual lesions disappear within several hours without leaving a mark. Which diagnosis is most likely?
19.
A patient with generalized wheals suddenly develops lip swelling, difficulty breathing and hypotension. Which management principle is most important?
20.
A patient with chronic plaque psoriasis asks whether the disease can be transmitted to family members by physical contact. Which counselling point is most appropriate?
21.
A 38-year-old man with chronic plaque psoriasis develops multiple new psoriatic lesions along scratch marks on his forearm several days after trauma. Which phenomenon explains this finding?
22.
A patient with a severe drug-related epidermal necrolysis syndrome has extensive skin loss and painful mucosal erosions. Which supportive management principle is most important during the acute phase?
23.
A 28-year-old woman has intensely itchy, purple, flat-topped polygonal papules over the flexor aspects of both wrists. Which diagnosis is most likely?
24.
A young adult with inflammatory acne is prescribed a topical retinoid. Which therapeutic effect is most relevant to acne management?
25.
A 42-year-old woman develops flaccid blisters and painful oral erosions. Gentle pressure on apparently normal skin causes epidermal separation. Which diagnosis is most likely?
26.
A 36-year-old man has recurrent erythematous scaling around the scalp margin, eyebrows and nasolabial folds. Symptoms improve with an antifungal shampoo. Which organism is most closely associated with this disorder?
27.
A patient with long-standing psoriasis reports new pain, swelling and morning stiffness involving several distal interphalangeal joints. Nail pitting is also present. Which additional complication should be suspected?
28.
A 76-year-old man develops widespread pruritic tense bullae. A skin biopsy shows a subepidermal blister, and direct immunofluorescence demonstrates linear immunoreactant deposition along the basement membrane zone. Which diagnosis is most likely?
29.
A 45-year-old woman with psoriasis presents with fever and widespread erythema studded with numerous sterile superficial pustules. She appears systemically unwell. Which form of psoriasis best explains this presentation?
30.
A woman develops tender, erythematous subcutaneous nodules over both shins following a recent systemic illness. Which condition is most likely?
31.
A 30-year-old man has well-demarcated erythematous plaques covered by silvery scale over the elbows and knees. Which diagnosis best fits this presentation?
32.
A 21-year-old woman has severe nodulocystic acne with progressive facial scarring despite appropriate topical therapy. Oral isotretinoin is being considered. Which issue requires the most important counselling before treatment?
33.
A 50-year-old patient with recurrent mucocutaneous erosions undergoes direct immunofluorescence of perilesional skin. Which pattern would support pemphigus vulgaris?
34.
A 20-year-old man has recurrent, symmetrical target-shaped lesions over the backs of his hands after an episode of herpes simplex infection. Which diagnosis is most likely?
35.
A 48-year-old woman presents with a generalized rash, proximal muscle weakness and violaceous discoloration around the eyelids. Examination also reveals papules over the knuckles. Which systemic disorder is most strongly suggested by these skin findings?
36.
A patient is being assessed for a widespread rash. Which part of the history is especially important when a drug eruption is suspected?
37.
A 17-year-old boy presents with comedones, papules and pustules over the face and upper back. Which process contributes most directly to the development of acne vulgaris?
38.
A 72-year-old man develops intensely pruritic, tense blisters over the lower abdomen and thighs. Oral mucosa is unaffected. Which disorder is most likely?
39.
A patient with chronic plaque psoriasis says he has stopped treatment because repeated relapses make him believe therapy is ineffective. Which counselling approach is most appropriate?
40.
A 32-year-old man with chronic eczema has dry, thickened, hyperpigmented skin with accentuated skin markings over areas that he repeatedly scratches. Which term best describes this chronic morphological change?
