Infections of the skin Flashcards
How does the skin act as a defensive barrier?
- epidermis
- surface is dry
- acidic pH
- sweat secretion
- rich blood and lymphatic supply
- produces antimicrobial substances
Where does ringworm occur?
keratinised epithelium
Where does impetigo occur?
epidermis
Where does cellulitis occur?
subcutaneous fat
What are the routes of infection?
skin
wounds
bites
What are the three main bacterial infections of the skin and are they gram negative or positive?
Streptococcus pyogenes - +
Staphylococcus aureus - +
Pseudomonas aeruginosa - -
What are the different forms of skin lesion?
macule
papule
vesicle
ulcer
What does the human papiloma virus cause?
warts
What does the herpes simplex virus 1 cause?
cold sores
What does the herpes simplex virus 2 cause?
genital warts
What does the varicella zoster virus cause?
chicken pox, shingles
What is an example of a parasite of the skin?
Sarcoptes scabei causing scabies
