Skin infections caused by S. aureus
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Questions and Answers

What skin condition is characterized by infected hair follicles and is commonly referred to as a boil?

  • Impetigo
  • Carbuncle
  • Cellulitis
  • Furuncle (correct)

    • Which condition involves a fast spreading infection of the dermis and is associated with systemic symptoms like fever?

  • Impetigo
  • Cellulitis (correct)
  • Furuncle
  • Carbuncle

    • Which of the following is primarily caused by the exfoliative toxin released by S.aureus?

  • Cellulitis
  • Furuncle
  • Scalded Skin Syndrome (correct)
  • Impetigo

    • What is a common visual indicator of lymphangitis associated with cellulitis?

    <p>Red lines leading away from the infection site</p> Signup and view all the answers

    In Scalded Skin Syndrome, which group is most commonly affected by this S.aureus infection?

    <p>Newborns</p> Signup and view all the answers

    What type of infection is impetigo classified as?

    <p>Localized skin infection</p> Signup and view all the answers

    What is a potential consequence if a Staphylococcus aureus infection is not treated promptly?

    <p>Infection deepening into the dermis</p> Signup and view all the answers

    Which pathogen is commonly associated with cellulitis alongside Staphylococcus aureus?

    <p>Streptococcus pyogenes</p> Signup and view all the answers

    What is a hallmark feature of the lesions caused by impetigo?

    <p>Crusty yellow lesions</p> Signup and view all the answers

    In which condition does the epidermis peel off in layers as a result of toxin activity?

    <p>Scalded Skin Syndrome</p> Signup and view all the answers

    Impetigo is caused by Streptococcus pyogenes and is characterized by crusty yellow lesions.

    <p>False</p> Signup and view all the answers

    Cellulitis is characterized only by the presence of red lines leading from the infection site.

    <p>False</p> Signup and view all the answers

    Scalded Skin Syndrome primarily affects newborns and is contagious among them.

    <p>True</p> Signup and view all the answers

    A furuncle is also known as a boil and is caused by an infected hair follicle.

    <p>True</p> Signup and view all the answers

    Staphylococcus aureus primarily causes superficial infections in the epidermis.

    <p>False</p> Signup and view all the answers

    Lymphangitis is inflammation of the hair follicles caused by Staphylococcus aureus infections.

    <p>False</p> Signup and view all the answers

    Hyaluronidase is released by Staphylococcus aureus in conditions like Scalded Skin Syndrome.

    <p>True</p> Signup and view all the answers

    The exfoliative toxin of S.aureus is responsible for skin peeling in conditions like impetigo.

    <p>True</p> Signup and view all the answers

    Cellulitis requires immediate treatment to prevent the infection's progression.

    <p>True</p> Signup and view all the answers

    Furuncles form as a result of a systemic infection affecting multiple body systems.

    <p>False</p> Signup and view all the answers

    Study Notes

    Staphylococcus aureus Infections

    • S. aureus can cause localized skin lesions.
    • Furuncle (boil) is an infected hair follicle.
    • Carbuncle is a group of furuncles.
    • Impetigo is an infection of the epidermis, causing crusty yellow lesions.
    • S. aureus releases exfoliative toxin, leading to skin peeling at lesions.
    • Cellulitis is a fast-spreading infection of the dermis.
    • Staphylococcus aureus and Streptococcus pyogenes commonly cause cellulitis.
    • Cellulitis is characterized by pain, swelling, fever, and lymphangitis (inflammation of lymphatic vessels).
    • Scalded Skin Syndrome occurs when S. aureus releases exfoliative toxin and hyaluronidase.
    • The toxin spreads through the layers of the epidermis, causing it to peel off in layers.
    • Scalded Skin Syndrome is more common in newborns and is contagious.

    Staphylococcus aureus Infections

    • Staphylococcus aureus can cause several skin infections.
    • Furuncles (boils) are infected hair follicles.
    • Carbuncles are groups of furuncles.
    • Impetigo is an infection of the epidermis, causing crusty yellow lesions.
    • S. aureus releases exfoliative toxin during impetigo, causing skin peeling.
    • Cellulitis is a deeper infection of the dermis.
    • Cellulitis is commonly caused by S. aureus or Streptococcus pyogenes.
    • Cellulitis is a serious condition requiring immediate treatment.
    • Cellulitis symptoms include pain, swelling, fever, and lymphangitis (inflamed lymphatic vessels).
    • Scalded Skin Syndrome is caused by S. aureus releasing exfoliative toxin and hyaluronidase in the epidermis.
    • The toxins cause the epidermis to peel off in layers, resulting in a scalded skin rash.
    • Scalded Skin Syndrome is more common in newborns and is contagious.

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    Description

    This quiz covers the various infections caused by Staphylococcus aureus, including localized skin lesions, furuncles, carbuncles, and cellulitis. It also highlights the effects of exfoliative toxins and Scalded Skin Syndrome, especially in newborns. Test your knowledge on symptoms, causes, and the contagious nature of these infections.

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