Notes on Common Medical Fungi

  breadcrumb arrow   Rahul's Noteblog   breadcrumb arrow   Notes on Mycology   breadcrumb arrow   Notes on Common Medical Fungi

Malassezia Furfur:

• Hypopigmented spots on chest and back.

• KOH mount: spaghetti and meatballs.

• Fungemia in premature infants.

Dermatophyte Infections:

• Tinea capitis: ringworm of scalp.

• Tinea barbae: ringworm of bearded region.

• Tinea corporis: infection of glabrous skin.

• Tinea cruris: jock itch.

• Tinea pedis: athlete's foot.

• KOH mount: arthroconidia and hyphae.

• Treatments: topical imidazoles or tolnaftate; oral imidazoles or griseofulvin where hair/skin is infected.

Sporothrix Schenckii:

• Live on plants; infects by traumatic implantation.


• Sporotrichosis (rose gardener's disease).

• Pulmonary sporotrichosis.

Histoplasma Capsulatum:

• Soil of bird and bat feces.

• Cave explorers infected.

• Facultative intracellular parasite; tiny; many fit into RES cells.


• Fungus flu.

Coccidioides Immitis:

• Dimorphic.

• Desert sand.


• Valley fever; complications in third trimester of pregnancy.

Blastomyces Dermatitidis:

• Dismorphic fungus.

• Rotting wood.

• Causes blastomycosis: pulmonary disease; self-resolves.

Aspergillius Fumigatus:

• Monomorphic.

• Allergic bronchopulmonary asperillosis/asthma, allergies.

• Fungus ball.

• Invasive aspergillosis.


Itraconazole or amphotericin B.

Candida Albicans:

• Yeast.

• Endogenous to mucous membrane.


• Oral thrush: IC hosts.

• Esophagitis, gastritis, septicemia, endocarditis, yeast vaginitis.

• KOH mount: pseudohyphae, true hyphae, budding yeasts.



• Imidazoles or oral imidazoles; nystatin.


• Amphotericin B or fluconazole.

Cryptococcus Neoformans:

• Monomorphic.

• Soil/pigeon droppings; seen in pigeon breeders.

• Predisposing conditions: AIDS/meningitis/Hodgkin's; acute pulmonary.

• Antigen detected in CSF.

• Treatment: amphotericin B or fluconazole.

Mucur, Rhizopus, Absedia:

• Soil.

• Rhinocerebral infections in ketoacidotic diabetic and leukemic patients.

• KOH mount: broad, ribbon-like nonseptate hyphae; 90 degree angle.

• Treatment: amphotericin B.

Pneumocystis Carinii:

• Fungus; obligate extracellular parasite.

• Causes interstitial pneumonia; fever, cough, shortness of breath.

• Silver-staining cysts; honeycomb appearance on H and E stain.


• Trimethoprim/sulfamethoxazole.

Additional Readings:

Basic Mycology

1. Common Medical Fungi

Medical Images

Useful Medical Images & Diagrams (link opens in a new window)

Random Pages:

Why I Support Mercy Killing Review of Delta Roma Imperiale Fountain Pen
Video of me playing Unknown Easy Blues Piano Notes on Gastrointestinal System
Notes on Lower Limb What is Folliculitis?
Notes on Nitrogen Fixation (Metabolism) reactions, and Heme Metabolism What is Pulseless Electrical Activity?
Effects of Drugs on Fetal Development Diagram of Gastric Blood Supply
Notes on Basic Gastrointestinal Physiology Why I Support Mercy Killing
How To Optimize Your Web Server What is an ELEK`s Test?
Why did I decide to become a doctor? Medical School Admissions Essay Video: Titanic Piano Theme: The Portrait
Corporate Failure: The Enron Case My Experience during the Iraqi Invasion of Kuwait
USMLE Blood Lab Values Regulation of Heart Rate by Autonomic Nervous System
Images of Antibodies Rahul`s Piano Music MP3 Collection
Notes on Renal/Urinary System Differentiation and Anatomy of a Blastocyst
Notes on Cell Components Notes on Nervous Tissue
Voices from Hell: My Experience in Mussoorie, India Video of Cardiology Examination in a Clinical Setting

Please Do Not Reproduce This Page

This page is written by Rahul Gladwin. Please do not duplicate the contents of this page in whole or part, in any form, without prior written permission.