Question 1

All of the following statements about erythroderma are true EXCEPT

Accepted Answer

The most common cause of erythroderma is not drug reaction; it is usually due to exacerbation of pre-existing dermatoses such as psoriasis, atopic dermatitis, or cutaneous T-cell lymphoma. Drug reactions are a cause but not the most common one.

Question 2

The feature you would NOT expect to find in a case of erythema multiforme after cefaclor use is

Accepted Answer

A

Question 3

Which of the following features is consistent with scarlet fever

Accepted Answer

Scarlet fever is characterized by a punctate rash that typically starts on the neck and trunk and can spread to other parts of the body.

Question 4

Erythema Nodosum is an example of

Accepted Answer

Erythema Nodosum is an example of panniculitis, which is an inflammation of the fat layer beneath the skin.

Question 5

Geographic tongue is caused by

Accepted Answer

Geographic tongue, also known as benign migratory glossitis, is a condition characterized by map-like patterns on the tongue due to areas of atrophy of the filiform papillae. Its exact cause is unknown, but it is not directly caused by any of the conditions listed (A-D). It is thought to be related to genetic factors and is associated with other conditions like psoriasis but is not caused by Kawasaki disease, syphilis, acromegaly, or pernicious anemia.

Question 6

The toxic reaction you would least expect with bupivocaive is

Accepted Answer

Anaphylaxis is least expected with bupivacaine compared to the other options. Bupivacaine is more commonly associated with central nervous system and cardiovascular system effects such as fitting, arrhythmias, and depressed level of consciousness due to its local anesthetic properties.

Question 7

Which of the following is associated with a lower incidence of wound infection (given adequately cleaned wounds)

Accepted Answer

All of the options listed are associated with a lower incidence of wound infection when used appropriately. Steristrips, staples, and Histoacryl (a type of tissue adhesive) are all methods of wound closure that, when used on adequately cleaned wounds, can minimize infection risk by properly closing the wound. Antibiotics for puncture wounds can also reduce the risk of infection by targeting potential bacterial contamination that might occur with such injuries.

Question 8

Which of the following is not associated with poor wound healing

Accepted Answer

The answer of Which of the following is not associated...

Question 9

If a patient presents with DIC after dog bite the likely organism would be

Accepted Answer

Capnocytophaga canimorsus is the organism most commonly associated with severe infections following dog bites, including conditions such as DIC (Disseminated Intravascular Coagulation). This bacterium is part of the normal flora of a dog's mouth and can cause severe infections in humans, especially in those with compromised immune systems.

Question 10

A backpacker returns from Thailand claiming to have been bitten by a dog in Bangkok the week before. There is a healing wound with scab on the right forearm ulnar aspect of the extensor surface. She cannot remember her vaccination status. Which statement is most correct

Accepted Answer

Rabies post-exposure prophylaxis includes the administration of rabies vaccine and rabies immunoglobulin. The regimen described in option D (250U TIG, 0.5mL of ADT 3 times in the next 3 months, 20U/kg RIG once, and 0.1mL HDCV 5 times in the next month) aligns with the comprehensive approach for someone potentially exposed to rabies, especially in a country where rabies is endemic and the vaccination status is unknown.

Question 11

Which rash is not characteristically found on the hands?

Accepted Answer

Herpes simplex typically presents with vesicular lesions on or around the lips and genitalia, rather than characteristically on the hands. The other conditions listed can indeed present with rashes that may involve the hands among other body areas.

Question 12

In what dermatological condition is a Tsanck smear used to aid diagnosis?

Accepted Answer

A Tsanck smear is used to aid in the diagnosis of herpes vesicular lesions. It involves scraping the base of a vesicle and examining the cells for multinucleated giant cells, which are indicative of herpes simplex virus (HSV) or varicella-zoster virus (VZV) infections.

Question 13

Which is not true of erythema multiforme?

Accepted Answer

The answer of Which is not true of erythema multiforme?
...

Question 14

Which drug is not likely to cause toxic epidermal necrolysis?

Accepted Answer

Cimetidine is not commonly associated with toxic epidermal necrolysis (TEN), unlike the other options listed, which have been linked to this severe skin reaction.

Question 15

Which is not a possible cause of a blistered patient?

Accepted Answer

Molluscum contagiosum typically presents as small, firm, flesh-colored papules with a dimple in the center, rather than causing blisters.

Question 16

Which is NOT TRUE of staphylococcal scalded skin syndrome?

Accepted Answer

Staphylococcal scalded skin syndrome (SSSS) does involve mucosal surfaces, contrary to the statement in option C. SSSS can affect areas such as the conjunctiva, oropharynx, and genital mucosa, making this statement false.

Question 17

Which infectious erythema is purely caused by toxin alone and not from the infectious process as well?

Accepted Answer

The answer of Which infectious erythema is purely caused by...

Question 18

Which rash is not usually itchy?

Accepted Answer

Scarlet fever rash is not typically itchy, unlike the rashes caused by urticaria (hives), eczema, scabies, and bites, which are generally associated with itching.

Question 19

Which is not true of scarlet fever?

Accepted Answer

Scarlet fever rash typically does blanche, which means when pressure is applied to the skin, the rash turns white. This characteristic distinguishes it from certain other rashes that do not blanche, such as those caused by meningococcemia.

Question 20

Which is not one of the five criteria other then fever required to make the diagnosis of Kawasakis disease?

Accepted Answer

Kawasaki disease is diagnosed based on the presence of fever and at least four of the following five criteria: cervical lymphadenopathy, peripheral changes (such as erythema and edema of hands and feet), bilateral non-purulent conjunctivitis, polymorphous rash, and changes in the lips and oral cavity (such as strawberry tongue). Pustular tonsillitis is not one of the criteria for Kawasaki disease.

Quiz 1: Dermatological Conditions and Symptoms