M17 quiz

• (a yeast) grows on oily secretions and may cause dandruff

  • Pityrosporum ovale/ Malassezia furfur

  
  

  Treatment:

  • Ketoconazole, Zinc pyrithione, Selenium sulfide shampoos
• Skin rash arising from another focus of the infection

  • Exanthem
• Mucous membrane rash arising from another focus of the infection

  • Enanthem
• Small fluid filled lesion

  • Vesicles

  Flat reddened lesion

  • Macule

  Raised lesion with plus

  • Pustule
• Gram-negative cocci, coagulase negative. Majority of skin microbiota

  • Staphylococcus epidermidis
• Infection of the hair

  • Folliculitis
• Folliculitis if an eyelash

  • Sty
• Abscess; pus surrounded by inflamed tissue

  • Furuncle
• Inflammation of tissue under the skin

  • Carbuncle
• Crusting (nonbullous) sores, spread by autoinoculation

  • Impetigo
• Caused by toxic shock syndrome toxin 1

  • Toxic shock syndrome
• Caused by exfoliative toxin b which circulates to distant sites

  • Scalded skin syndrome
• Erysipelas (red patches) and impetigo (isolated pustulate) are commonly caused by S. pyogenes
• This is self-limiting rash of about 2 weeks' duration, often associated with swimming pools and pool type saunas and hot tubs

  • Pseudomonas dermatitis
• Painful infection of the external ear canal leading to the eardrum that is frequently caused by pseudomonas

  • Otitis externa/ Swimmer ears
• Mild sebum channels blocked

  • Comedonal acne
• Propionibacterium acnes

  • Inflammatory acne
• Severe, characterized by nodules or cysts, which are inflamed lesions filled with pus deep within the skin

  • Nodular Cystic acne
• Also known as papillomas. Spread by direct contact. INcubation period is several weeks

  • Warts
• Smallpox is transmitted by the respiratory route, and the virus is moved to the skin via the bloodstream where it causes lesions that become pustular
• Shingles (herpes zoster) is characterized by a vesicular rash along the affected cutaneous sensory nerves (dermatome)
• Occasional severe complications of chicken pox, influenza and sometimes other viral disease in children

  • Reye's Syndrome
• HSV

  • Herpes Simplex Virusirus
• Cold sores or fever blisters

  • Vesicle in lips
• Vesicle in skin

  • Herpes gladiatorum
• Vesicle in fingers

  • Herpetic whitlow
• HS viruses infect the brain

  • Herpes encephalitis
• Can remain latent in trigeminal nerve ganglia

  • HSV-1
• Can remain in sacral nerve ganglia

  • HSV-2
• Encephalitis treatment

  • Acyclovir
• This Fifth disease, or erythema infectiosum, produced no symptoms at all in about 20% of individuals infected by the virus
• Caused by several enteroviruses. Spread by contact with mucous or saliva of an infected person

  • hand-Foot-and-Mouth-Disease
• Fungi that colonizes the outer layer of the epidermis cause dermatomycoses (tinea or ringworm)
• Body

  • Tinea corporis
• Scalp (may caused bald patches. Spread by contact among children and by contact with domites, dogs, and cats)

  • Tinea capitis
• Groin (Jock itch)

  • Tinea cruris
• Foot (Athlete's foot)

  • Tinea pedis
• The pathogens are human herpesviruses 6 (HHV-6) and 7 (HHV-7), the latter is responsible for 5-10% of roseola cases
• Nails (treatment: Itraconazole and Terbinafine)

  • Tinea unguium
• Sporothrix schenckii enters puncture wound