Patients with rashes in groin region as shown in the figure below. Which of the following cannot be the cause?
Ans: A. Aspergillus
- Dermatophytes are fungi that require keratin for growth.
- These fungi can cause superficial infections of the skin, hair and nails.
- These anamorphic (asexual or imperfect fungi) mold genera are: Microsporum, epidermophyton and trichophyton.
- Dermatophytes are spread by direct contact from other people (anthropophagic organisms), animals (zoophilic organisms) and soil (geophilic organisms).
- Diagnosis is based on the history, physical examination and potassium hydroxide (KOH) microscopy. Wood lamp examination and fungi culture or histologic examinations are occasionally required.
- Tenia crusis: Rashes appear red, scaly and pustular, often accompanied by itch. Men > women. Exacerbated by sweet and tight clothing (hence the term jock -itch). Can extend from the groin to the peripheral skin and gluteal cleft.
- Invasive infection with aspergillus most commonly seen during acute periods of neutropenia, but shifts in conditioning regimens and other strategies to promote earlier engraftment have led to infections after 30-40 days post-transplantation.