MYCOTIC(FUNGAL) INFECTIONS

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Mycotic infections of the skin are called

Dermatomycoses

Superficial Mycoses

These fungi occupy outer epidermal surfaces. Infections are not inflammatory or invasive. Known as "cosmetic disease"

Colored nodules on hair shaft are called

Piedras.

White Piedra

Trichosporon begigelii

Black Piedra

Piedraia hortae

What infection is caused by Malassezia?

Tinea Versicolor or Pityriasis versicolor. Produces scaling which interferes with pigmentation. Results in spotty or mottled appearance.

CUTANEOUS MYCOSES

infections of the skin, hair and nails

What organisms caused Ringworms -Tinea-?

Tricophyton, Microsporum, Epidermiphyton

What is the Tinea of the body?
The Groin (Jock itch)
The head
The foot
The hand
The Beard
The nails

Tinea corporis
Tinea Cruris
Tinea Capititis
Tinea pedis (Athlete's foot)
Tinea manuum
Tinea barbae
Tinea unguium

SUBCUTANEOUS MYCOSES

fungal infections beneath the skin caused by saprophytic fungi that live in soil and on vegetation

What organism caused Sporotrichosis?

Spotothrix. Common name of disease Rose Gardener's disease. Found in soil and dead things.
Introduced by thorns or splinters.

How Sporotrichosis is transmitted?

Penetration of skin - Fungus grows forming hard nodule- Enlarges to bubo- becomes necrotic. Breaks through skin and drains. Often progresses along lymphatic channels.

What organism caused Chromoblastomycosis?

Fonsecaea. Chracterized by verucoud (Though, warty) lesions. Generally no painful- many individuals dont seek for treatment- disease continues to progress.

What organism caused Mycetoma AKA Madura Foot?

Madurella and Actinomyces

OPPORTUNISTIC MYCOSES

infect weakended state fungal disease, caused by normal microbiota or environmental fungi

What organism caused Candidiasis AKA Trush?

Candida albicans. Numer 1 nosocomial infections.
Infections run from Superficial skin to Fatal systemic.
Widespread yeast, normal flora of: oral cavity, genitalia, and large intestine. Increase risk of infection in age, pregnancy, use of birth control pills, immunodeficiency, antibiotic therapy, and providing a warm moist environment against the skin

Trush/ Oral candidiasis

Common in newborns who pick it in passage through the vagina. White milk like growth covering the mucus membranes of the oral cavity.
Vaginitis: Itching, burning sensation, white "cheesy" discharge. May become systmeic. Meninges and heart tissue involved.

PARASITIC INFESTATION OF SKIN

Parasitic organisms such as protozoa and helminth can infect the skin and cause disesa conditions

SCABIES

Caused by the tiny mite Sarcoptes, which burrow in the skin to lay eggs. It can break into the skin but dont diseminate systemic

PEDICULOSIS

Caused by the lice "Pediculus humanus capitatis" (head louse). P.h. corporis ( body louse). Feed on blood. Lay eggs (nits) on hair

DISEASES OF THE EYE

Microbes infecting the epithelia cell of covering the eye

TRACHOMA

a chronic contagious viral disease marked by inflammation of the conjunctiva and cornea of the eye and the formation of scar tissue. Cause blindness

What organism caused the disease Trachoma?

Chlamydia. Obligate intracellular parasite. Infection causes scar tissue to form on cornea shich leads to blindness. 2nd infections from dry eyes. Transmission: Finger/ fomites; flies

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