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Questions and Answers
What is Athlete's foot caused by?
Impetigo is caused by a fungal infection.
False
What virus causes chickenpox?
Varicella zoster
A burn results in tissue damage and cell death caused by ______.
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Which skin lesion is characterized by reddened epidermal lesions covered by dry, silvery scales?
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Match the skin lesions with their causes:
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Burned skin remains sterile for 48 hours.
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What is the main symptom of contact dermatitis?
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Study Notes
Skin Lesions
- A skin lesion is any abnormal growth or appearance on the skin compared to the surrounding skin.
- Causes of skin lesions include infections, allergies, burns, and skin cancers.
Infections
- Athlete's Foot: Itchy, red, peeling skin between the toes caused by the fungus tinea pedis.
- Ringworm: A fungal infection affecting the skin of the scalp, feet, groin, beard, or other areas. It can affect both humans and animals.
- Boils & Carbuncles: Inflammation of hair follicles and sebaceous glands, often on the dorsal neck, caused by bacterial infection.
- Impetigo: Pink, water-filled raised lesions that develop a yellow crust and rupture. Commonly found around the mouth and nose. Caused by a contagious staphylococcus infection.
- Cold Sores: Small fluid-filled blisters around the lips and oral mucosa caused by a herpes simplex infection. They are itchy and sting.
- Chickenpox: Caused by the Varicella zoster virus. It results in itchy rash with blisters.
- Shingles: Reactivation of the Varicella zoster virus, which causes shingles. It often starts with altered sensation along a dermatome.
- Warts: Caused by the Human Papilloma Virus (HPV). Spread through direct contact. There are vaccines available.
Allergies
- Contact Dermatitis: Itching, redness, and swelling of the skin that progresses to blistering.
- Psoriasis: A chronic condition characterized by overproduction of skin cells. Reddened epidermal lesions are covered by dry, silvery scales. Attacks can be triggered by trauma, infection, hormones, and stress.
Burns
- Burns: Tissue damage and cell death caused by intense heat, electricity, UV radiation, and certain chemicals.
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Burn Risks:
- Dehydration and electrolyte imbalance leading to circulatory shock.
- Burned skin is sterile for 24 hours, making it prone to infection after that.
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Description
This quiz covers various types of skin lesions and their causes, particularly focusing on infections. You will learn about common conditions like Athlete's Foot, Ringworm, and Cold Sores. Test your knowledge on the characteristics and causes of these skin infections.
