Overview of MSK Infections

Which of the following skin infections affect deeper skin layers?

• Cellulitis

• Folliculitis

• Erysipelas

• Furuncles

Which of the following involves the epidermis and dermis,

and can spread to deeper layers, through lymphatics and into the bloodstream?

• Folliculitis

• Furuncle

• Erysipelas

• Cellulitis

Which of the following is the common organism responsible

for causing myonecrosis?

• Streptococcus pyogenes

• Clostridium perfringens

• Staphylococcus aureus

• Staphylococcus saprophyticus

All of the following are examples of superficial mycoses, EXCEPT?

• Tinea versicolor

• Tinea nigra

• Black piedra

• Tinea pedis

 Which of the following is the common cause of Athlete's foot?

• Wearing tight shoes

• Sweating a lot

• Keeping the feet wet for a long period of time

• All of the above

What is the most reliable laboratory method for the isolation of Trichophyton rubrum?

• Blood culture

• Serological methods

• Skin scrapings microscopic examination using KOH

• Urease test

A young man comes to your office and is a little embarrassed to tell you about  his complaint. He states that he has a problem around his groin. Upon inspection you find a well demarcated and moist rash around his groin and the insides of both his legs. What might his problem be? Choose the best answer.

• Tinea unguium

• Tinea corporis

• Bacterial foliculitis

• Tinia cruris

Acute osteomyelitis is commonly caused by

• Staphylococcus aureus.

• S. pyogenes.

• H. influenzae.

• Salmonella spp.

What are the most frequent pathogens in a sickle cell anemia patient with osteomyelitis?

• S. aureus and Serratia

• Pseudomonas spp.

• S. aureus and Salmonella spp.

• Streptococcus and Enterococcus