Superficial and Cutaneous Mycology Quiz

1- During an office visit you notice a brown spot on the bottom of your patient's foot. You determine that it could be a fungal infection and take a sample to inspect under a microscope. Under the microscope you see many 2 celled oval yeast with short hyphae. Which is the likely diagnosis for this spot?





2- One characteristic found almost exclusively on dermatophytes is the presence of microconidia and macroconidia. Microconidia are more uncommon; however, one group of dermatophytes is recognizable for having a lot of microconidia and only rare macroconidia. Which group of dermatophytes is known for its numerous microconidia?





3- 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.





Use this scenario for the next two questions:


A 30 year old woman comes into your office to show you how her skin is changing. She concerned about the red color of her chest. You recognize these hyper-pigmented macules as a certain superficial mycoses. When illuminated by a Wood lamp it fluoresces bright yellow.


4- What is the etiologic agent of her complaint?





5- What superficial mycoses does she have?





6- What is the etiologic agent for Tinea Nigra?





7- Where is the most common place to find Tinea Unguiun?





8- Traditional ringworm is not actually a worm, but rather a fungus. This fungus can be found anywhere on the body, but not usually the scalp, groin, palms, or soles. Ringworm may or may not itch, and may even have a burning sensation. What is the proper name for ringworm?





9- Piedra hortae causes a superficial fungal infection of the hair shaft that is characterized by small dark nodules surrounding the shaft. This infection typically infects the hair of the scalp. Which fungal infection is caused by Piedra hortae





10- What color do dermatophyte microsporum species fluoresce under a Wood lamp?