Are dermatophytes superficial or cutaneous?
Dermatophytoses are superficial infections of the skin and its appendages. Common names for these infections include ringworm (Figure 45–1), athlete’s foot, and jock itch. They are caused by species of three genera collectively known as dermatophytes.
What are cutaneous fungi?
Cutaneous fungal infections are noninvasive infections of the skin, hair, or nails that cause pathologic changes in the host. The fungi can be yeast-like, causing infections such as candidiasis, or mold-like, causing tinea infections.
What is the mode of transmission for dermatophytes?
Dermatophytes are spread by direct contact from other people (anthropophilic organisms), animals (zoophilic organisms), and soil (geophilic organisms), as well as indirectly from fomites.
What are some examples of cutaneous mycoses?
The Cutaneous Mycoses
| Disease | Causative organisms |
|---|---|
| Dermatophytosis Ringworm of the scalp, glabrous skin and nails. | Dermatophytes (Arthroderma, Lophophyton, Microsporum, Nannizzia, Trichophyton, Epidermophyton) |
| Candidiasis of skin, mucous membranes and nails. | Candida, Debaryomyces, Kluyveromyces, Meyerozyma, Pichia, etc. |
Is are caused by a cutaneous mycosis?
A group of cutaneous mycoses called tineas are caused by dermatophytes, fungal molds that require keratin, a protein found in skin, hair, and nails, for growth. There are three genera of dermatophytes, all of which can cause cutaneous mycoses: Trichophyton, Epidermophyton, and Microsporum.
How is cutaneous fungal infection treated?
Cutaneous fungal infections are usually treated topically, but nail and hair infections, widespread dermatophytosis and chronic non-responsive yeast infections are best treated with oral antifungal drugs.
What are dermatophytes give two examples?
Types of infections
- Tinea pedis or athlete’s foot.
- Tinea cruris or jock itch.
- Tinea corporis or ringworm of the body.
- Tinea faciei or facial ringworm.
- Tinea capitis or scalp (“blackdot”) ringworm.
- Tinea manuum or ringworm of the hands.
- Onychomycosis, tinea unguium, or ringworm of the nail.
- Tinea incognito.
What kind of infection is caused by dermatophytes?
Dermatophytoses are fungal infections of the skin and nails caused by several different fungi and classified by the location on the body. Dermatophyte infections are also called ringworm or tinea. Symptoms of dermatophytoses include rashes, scaling, and itching.
How do you treat cutaneous mycoses?
In general, most cutaneous mycoses require treatment with antifungal medications (e.g., azole antifungals, amphotericin, terbinafine). Antifungal medications may be topical or oral, and the type recommended generally depends on the severity of the infection.
What type of infection is mycosis?
Fungal infection, also known as mycosis, is disease caused by fungi. Different types are traditionally divided according to the part of the body affected; superficial, subcutaneous, and systemic.
What is the difference between cutaneous and subcutaneous mycosis?
Mycoses that cause superficial infections of the epidermis, hair, and nails, are called cutaneous mycoses. Mycoses that penetrate the epidermis and the dermis to infect deeper tissues are called subcutaneous mycoses. Mycoses that spread throughout the body are called systemic mycoses.
