micro chap 18

  1. -also known as rubeola
    -sore throat, dry cough, headache, conjunctivitis, lymphadenitis, and fever
    -Koplik's spots appear then turn into red maculopapular exanthem
    -erupts on the head then progresses to the trunk and extremities until most of the body is covered
    -complications can result
    *secondary bacterial infections
    *subacute sclerosing pancephalitis (SSPE)
  2. -also known as German measles
    -relatively minor rash disease with few complications
    -two forms:
    *postnatal infection
    *congenital infection
    -teratogenic virus
    -transmission of virus to a fetus in utero
    -mother can transmit the virus even if she is asymptomatic
    -fetal injury varies depending on the time of infections
  3. -Erythema infectiosum
    -"slapped cheek" appearance
    -spreads on the body but is most prominent on arms, legs, and trunk
    -maculopapular, blotches run together
    -low-grade fever and malaise
    Fifth disease
  4. -common in young children and babies
    -most cases proceed without the rash stage; others result in maculopapular rash
    -high fever
    -fourth day, fever disappears, and rash can appear
  5. -most often the result of a respiratory infection with Streptococcus pyogenes
    -causes strep throat
    scarlet fever
  6. -caused by viruses
    -most caused by one of more than 80 human papilomaviruses (HPVs)
    wartlike eruptions
  7. -also known as papillomas
    -affect children more than adults
    -benign squamous epithelial growths
    -varioud types
  8. -smooth waxy nodules on the face, trunk, and limbs
    -may be indented in the middle
    -may contain milky fluid
    -common in children
    -most often causes nodules on the face, arms, legs, and trunk in children; mostly in genital areas in adults
    molluscum contagiosum
  9. -Leishmaniasis
    -Cutaneous anthrax
    large pustular skin lesions
  10. -zoonosis transmitted by female sand flies
    -several different forms, depending on the species that is involved
  11. -most common and least dangerous version of infection with Bacillus anthracis
    -caused by endospores entering the skin through small cuts or abrasions
    -papule that becomes increasingly necrotic then ruptures to form a black eschar
    cutaneous anthrax
  12. -dermatophytes
    -confined to the nonliving epidermal tissues and their derivatives
    -different names all beginning with the word tinea
    ringworm (cutaneous mycoses)
  13. -ringworm of the scalp
    -common in children
    -small scaly patches to a severe inflammatory reaction to destruction of the hair follicle and temporary or permanent hair loss
    tinea capitis
  14. -ringworm of the beard
    -aka barber's itch
    -chin and beard of adult males
    tinea barbae
  15. -ringworm of the body
    -prevalent infection of humans
    -can appear nearly anywhere on the body's glabrous skin
    -usually appears as one or more scaly reddish rings on the trunk, hip, arm, neck, or face
    tinea corporis
  16. -ringworm of the groin
    -also known as jock itch
    -thrives under conditions of moisture and humidity caused by sweating
    tinea cruris
  17. -ringworm of the foot
    -also known as athlete's foot and jungle rot
    -connected to wearing shoes-keep feet in a closed, warm, moist environment
    tinea pedis
  18. -ringworm of the hand
    -almost always associated with concurrent infection of the foot
    -usually occur on the fingers and palms of one hand
    -tinea manuum
  19. -ringworm of the nail
    -superficial white patches in the nail bed, or thickening, distortion, and darkening of the nail
    -artificial fingernails can provide a portal of entry into the nail bed
    tinea unguium
  20. -involve the outer epidermal surface
    -ordinarily innocuous infections with cosmetic rather than inflammatory effects
    -tinea versicolor caused by Malassezia furfur
    superficial mycoses
  21. -chronic Chlamydia trachomatis infection of the epithelial cells of the eye
    -major causes of blindness in certain parts of the world
    -first signs of infection-mild conjunctival discharge and slight inflammation of the conjunctiva
    -followed by marked infiltration of lymphocytes and macrophages
    -as these cells build up, they impart a pebbled appearance to the inner aspect of the upper eyelid
    -eventually, pannus occurs
  22. -more serious infection than conjunctivitis
    -invasion of deeper eye tissues occurs, can lead to complete corneal destruction
    -any microorganism can cause this condition
    -one of the more common causes: herpes simplex virus
    -preliminary symptoms: gritty feeling in the eye, conjunctivitis, sharp pain, and sensitivity to light
  23. -chronic parasitic (helminthic) infection
    -Onchocerca volvulus transmitted by black flies
    -the worms eventually invade the entire eye, producing inflammation and permanent damage to the retina and optic nerve
    river blindness
Card Set
micro chap 18
infectious diseases affecting the skin and eyes