mycology huda alzubaidi december 2, 2013. introduction transmission causes symptoms types of...
TRANSCRIPT
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DERMATOPHYTOSIS
MycologyHuda Alzubaidi
December 2, 2013
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Outline
Introduction
Transmission
Causes Symptoms
Types of infection
Conclusion
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Inroduction
Dermatophytosis is a mycotic infection of the hair, skin, or nails.
The fungi that cause dermatophytosis are Dermatophytes.
The genera which cause this infection include: Trichophyton, Microsporum & Epidermophyton .
The most common diseases that dermatophytes cause are Tinea pideas (Athlete’s Foot) and Tinea capitis (ringworm).
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Facts
Approximately 70% of the world’s population is predicted to experience dermatophytosis during their lifetime.
Infection only occurs when skin conditions are in a warm and moist environment.
Adult males are more susceptible to Athlete’s foot while children are more likely to experience Tinea capitis.
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Athlete’s foot
Tinea pedis
Fungal infection that commonly occurs on the soles of the feet and between the webs of toes.
The name was derived from common infection within athletes
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Trichophyton
TRICHOPHYTON RUBRUM TRICHOPHYTON MENTAGROPHYTES
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Causes
Poor hygiene
Walking barefoot in contaminated environments.
Wearing tight fitting shoes that are airless and prevent sweat from evaporating.
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Transmission
Direct contact:Skin-to-skin contact
Indirect contact:ShoesTowels Nail salonsSwimming pools
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General Symptoms
Cracks and skin peeling between two toes
Soreness
Itchiness
Sweaty
Smelly feet
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Risk factors for Athlete’s foot
Immunocompromised
Those on immunosuppresants Organ transplant
patient’s
Diabetes
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Toe web infection
Inter-digital infection.
The most common type of athlete’s foot infection,
Easiest type of Athlete’s foot to treat.
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Moccasin infection
Moccasin type of infection is long lasting or chronic.
Caused by T. rubum
Severe cases this type of infection may lead to crumbling or fall out of toenails.
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Vesicular infection
Caused by T.mentagrophytes.
The least common of infection .
Begins as fluid-filled blisters on the skin, between toes, on the heel, or sole of the foot.
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Treatment& Prevention
Treatment: Non prescription topical antifungals such as
Micatin. prescription topical & oral antifungals such as
Naftin & Lamisil .
Prevention: Avoid walking barefoot. Keep your feet dry. Wear cotton socks.
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Tinea capitis
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Causal species
Microsporum canis M. audouinii M. distortum M. cookei
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Risk factors of Tinea capitis
Ages: 3-7 years old
Daycare centers.
Nursing homes
Immunocompromised
HIV & Cancer
Organ transplant patients
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Transmission
Direct contact with infected area of someone else.
Sharing contaminated combs, hats or bed clothes.
Pets such as dog & cats
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Tinea capitis Symptoms
Head rash & Scalp pain
Localized redness & swelling on the scalp.
Patches become lumpy.
Hair loss & lasting scars..
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Types of Tinea capitis infection
Three types:
Ectothrix infection
Endothrix infection
Favus infection
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Treatment& Prevention
Treatment:Oral therapy can be used such as Griseofulvin.
Prevention:Wash your hair regularly.No sharing personal items.
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Conclusion
Dermatophytosis is a fungal infection that infect the skin, hair and nails.
It is a zoonotic infection which can be transferred from animals to human.
It is more prevalent in warm climate. The most common disease of
dermatophytosis are Tinea pedis & Tinea capitis
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References
Alters, S., & Schiff, W. (2011). Essential concepts for healthy living. Sudbury, Mass: Jones and Bartlett Publishers.
Baxter, D. E., Porter, D. A., & Schon, L. (2008). Baxter's the foot and ankle in sport. Philadelphia, PA: Mosby Elsevier.
Bragg, P. C., & Bragg, P. (2004). Bragg build strong healthy feet. Santa Barbara, Calif: Health Science.
Diseases, disorders, and injuries. (2011). New York: Marshall Cavendish Reference.
Markova, T. (2002). What is the most effective treatment for tinea pedis (athletes’s foot)? Journal of Family Practice; 51(1):21.
Parekh, S. G., Patel, D., & Parekh, J. G. (2012). Foot and ankle surgery. New Delhi, India: Jaypee Brothers Medical Publishers.
Silverstein, A., Silverstein, V. B., & Nunn, L. S. (2011). Tapeworms, foot fungus, lice, and more: The yucky disease book. Berkeley Heights, NJ: Enslow Publishers