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Questions and Answers
Which bacteria commonly cause impetigo?
What is a defining characteristic of erysipelas?
What is the most common causative agent of folliculitis associated with areas of friction?
Which feature is NOT associated with impetigo?
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What typically weeps serous fluid among the listed infections?
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Epidermal erosion with elevated margins is a characteristic of?
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What causes folliculitis after exposure to swimming pools or hot tubs?
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Which population is primarily affected by erysipelas?
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Study Notes
Skin Infections
Impetigo
- Characterized by fragile, pinhead-sized vesicles or pustules that rupture early, forming rapidly enlarging and spreading erosions with bright yellow crusts.
- Crusts have elevated margins and are attached in the center.
- Spreading infection limited to the epidermis presents as a bullous, crusted, or pustular eruption of the skin.
- Lesions may weep a serous fluid.
Erysipelas
- A contagious disease of skin and subcutaneous tissue, marked by redness and swelling accompanied by vesicular and bullous lesions.
- Almost always caused by group A streptococci.
- Typically occurs on the cheek.
- Seen primarily in children and the elderly.
- Characteristics: blocking of dermal lymphatics, presenting as a well-defined, spreading erythematous inflammation.
- Often accompanied by pain and fever.
Folliculitis
- A group of skin conditions in which there are inflamed hair follicles.
- Results in a tender red spot, often with a surface pustule.
- Can affect anywhere there are hairs, including the chest, back, arms, and legs.
- Usually caused by S. aureus.
- Often associated with areas of friction and sweat gland activity.
- Most frequently seen on the neck, face, and axillae.
- Infection with P. aeruginosa can occur after exposure to inadequately chlorinated water in swimming pools or hot tubs.
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Description
Learn about the characteristics and symptoms of Impetigo and Erysipelas, two types of skin infections. Understand the differences and similarities between these conditions.
