Tinea (Ringworm) Overview

Questions and Answers

What causes Tinea (Ringworm)?

Dermatophytes (correct)

Bacteria

Virus

Malassezia furfur

Which symptom is characteristically associated with Tinea infections?

Mild redness

Severe pruritus (correct)

Fever

Hypopigmented areas

What is a common factor that aggravates Tinea symptoms?

High altitudes

Heat and humidity (correct)

Low UV exposure

Cold and dry weather

How does Tinea versicolor typically present on the skin?

Hypopigmented areas Signup and view all the answers

What is the causative agent of Tinea versicolor?

Malassezia furfur Signup and view all the answers

In which type of weather does Tinea versicolor frequently occur?

Hot and humid weather Signup and view all the answers

Which condition is NOT commonly associated with Candida albicans infections?

Ringworm Signup and view all the answers

What does Candida albicans primarily become when host defenses are impaired?

An opportunistic pathogen Signup and view all the answers

What symptom is characteristic of vulvo-vaginitis caused by Candida albicans?

Itching with cottage cheese discharge Signup and view all the answers

In which body areas is Candida albicans considered part of the normal flora?

Skin, upper respiratory tract, and female genital tract Signup and view all the answers

What is the appearance of oral thrush caused by Candida albicans?

White patches in the mouth Signup and view all the answers

What underlying factor contributes to Candida albicans becoming opportunistic?

Impaired host defenses Signup and view all the answers

What is the initial location where the larvae penetrate in the body?

Intestine wall Signup and view all the answers

What is one consequence of larval migration in the body?

Lung inflammation Signup and view all the answers

What happens to the larvae after they reach the trachea?

They are swallowed and return to the intestine Signup and view all the answers

What is a potential impact of severe infection in children caused by these worms?

Malnutrition Signup and view all the answers

What do adult worms release after maturing?

Eggs Signup and view all the answers

During which stage does damage occur due to the migration of larvae?

Migration phase Signup and view all the answers

What is the primary source of nutrition for adult hookworms?

Blood from intestinal wall capillaries Signup and view all the answers

What deficiency is most likely caused by hookworm infection?

Iron deficiency Signup and view all the answers

What route is primarily used for hookworm transmission?

Fecal-oral route Signup and view all the answers

Where in the human body do adult hookworms predominantly reside?

Colon Signup and view all the answers

What happens to hookworm eggs after they are released in feces?

They hatch in soil. Signup and view all the answers

What is the main consequence of blood loss due to hookworm infection?

Anemia Signup and view all the answers

What stage of the hookworm lifecycle occurs after eggs hatch?

Larval stage Signup and view all the answers

What is the immediate effect of hookworms feeding on intestinal blood?

Loss of iron Signup and view all the answers

What is the primary mode of transmission for Trichomonas vaginalis?

Direct sexual contact Signup and view all the answers

What symptom is commonly associated with Trichomonas vaginalis infection?

Watery foul-smelling greenish vaginal discharge Signup and view all the answers

Which best describes Entamoeba histolytica?

Anaerobic protozoa Signup and view all the answers

What condition can Entamoeba histolytica cause when ingested?

Acute amoebic dysentery Signup and view all the answers

In which conditions is Entamoeba histolytica commonly found?

Crowded conditions and poor sanitation Signup and view all the answers

What is a common symptom of infection with Entamoeba histolytica?

Painful defecation Signup and view all the answers

For which demographic is Trichomonas vaginalis often asymptomatic?

Men Signup and view all the answers

What type of discharge is typically associated with Trichomonas vaginalis infections?

Foul-smelling greenish Signup and view all the answers

Study Notes

Tinea (Ringworm)

Caused by dermatophytes, which infect superficial keratinized structures.
Transmitted through direct contact, leading to chronic skin infections characterized by itchiness (pruritus).
Symptoms worsen in hot and humid environments.

Tinea Versicolor

Results from Malassezia furfur, a type of yeast, causing superficial skin infection.
Characterized by hypopigmented areas on the skin.
Typically asymptomatic but common in hot and humid weather.

Candida albicans

Part of normal skin flora, upper respiratory tract, and female genital tract.
Can become opportunistic when host defenses are impaired.
Leads to oral thrush, presenting as white patches in the mouth.
Can cause vulvovaginitis, featuring itching and cottage cheese-like vaginal discharge.
Associated with chronic infections including Trichomonas vaginalis.

Trichomonas vaginalis

Spindle-shaped protozoan with four anterior flagella.
Transmitted through sexual contact, causing vaginal and prostate infections.
Symptoms include watery, foul-smelling greenish vaginal discharge, itching, and burning sensation around the vagina.
Men often remain asymptomatic.

Entamoeba histolytica

Anaerobic protozoan prevalent in crowded conditions and poor sanitation.
Spread via food and water contamination, resulting in acute amoebic dysentery.
Invades the colon, causing loose stools mixed with blood and mucus.
Painful defecation is common.

Hookworm

Adult worms reside in the intestinal lumen, feeding on blood from intestinal capillaries.
Nutritional deficiencies occur due to blood loss in the small intestine, leading to iron deficiency anemia.
Transmission occurs via the fecal-oral route with larval penetration through skin.

Lifecycle of Hookworm

Adult worms live in the colon and release eggs in feces.
Eggs in the soil hatch into larvae.
Larvae can penetrate the intestine wall, migrate to the lungs, and ascend to the trachea to be swallowed, reaching the intestine again to mature into adult worms.
Damage to the intestine occurs due to adult worms, while larval migration results in lung inflammation.
Severe infections can lead to malnutrition, particularly in children.

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Description

Explore the causes, characteristics, and effects of Tinea, commonly known as Ringworm. This quiz delves into the dermatophytes responsible and the nature of the infections they cause. Test your knowledge on how this skin condition is contracted and its clinical implications.