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Mycology

First Aid for the USMLE Step 1 (2021)

3 - Microbiology

Tinea (Dermatophytes): General Characteristics And Management

Fungal Cutaneous Infection

Which of the following descriptions is most consistent with tinea?

Trichophyton

Which of the following organisms is a common cause of tinea?

Microsporum

Which of the following organisms is known to cause tinea?

Epidermophyton

Which of the following organisms is a known cause of tinea?

Pruritic Rash

Which of the following is most consistent with the presentation of tinea?

Segmented Hyphae On KOH

Which of the following findings is most consistent with a diagnosis of tinea?

Topical Azole

Which of the following is most likely part of the management for tinea?

Organisms

Clinical Features

Management

Terbinafine For Tinea Unguium (Nails)

Which of the following is most likely a viable option in the management of tinea?

Pityriasis Versicolor (Tinea versicolor)

Malassezia Furfur

Which of the following microorganisms is the causal agent of pityriasis versicolor (tinea versicolor)?

Spaghetti and Meatball Appearance on KOH Prep

Which of the following microscopic findings is most likely associated with pityriasis versicolor (tinea versicolor)?

Lipid-Dependent Fungus

Which of the following mechanisms best describes the pathogenesis of pityriasis versicolor (tinea versicolor)?

Fatty Acids Damage Melanocytes

Which of the following mechanisms best explains the presence of hyper/hypo pigmented patches in patients with pityriasis versicolor (tinea versicolor)?

Hypopigmentation

During skin inspection, which of the following findings is most likely to be seen in dark-complected patients with pityriasis versicolor (tinea versicolor)?

Hyperpigmented Patches

During skin inspection, which of the following findings is most likely to be seen in light-complected patients with pityriasis versicolor (tinea versicolor)?

Hot, Humid Weather

Which of the following factors is most likely to exacerbate an infection caused by pityriasis versicolor (tinea versicolor)?

Topical or Oral Antifungals

Which of the following treatment groups is used to treat pityriasis versicolor (tinea versicolor)?

Selenium Sulfide

Which of the following drugs is used as an alternative therapy to eradicate pityriasis versicolor (tinea versicolor)?

Mechanism

Signs and Symptoms

Diagnosis

Fragmented Hyphae with Clusters of Yeast

Which of the following microscopic findings is most likely used to establish the diagnosis of pityriasis versicolor?

Treatment

Zinc

Which of the following substances is used as an adjuvant therapy for patients with pityriasis versicolor (tinea versicolor)?

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