Varicella Flashcards
Varicella known as chickenpox
vaih re cha La
vari ce lla
an acute infectious disease
Signs and Symptoms
early:
(1) fever
(2) headache
(3) malaise
then
1-rash begins 10-21 days after infection as small, red spots
2-become little bumps
3-then small fluid-filled blisters
then
lesions can erupt anywhere on the body
-rash begins 10-21 days after infection as small, red spots
macules
mac yil
mac ules بقع
become little bumps
papules
small fluid-filled blisters
vesicles/pustules
at increased risk :
(1) more severe in older children & adults
(2) threat to immunocompromised people and
also rash can spread over whole body
chracteristic :
1-most cases mild
2-begins with pain or tingling in skin
supplied by sensory nerve with latent virus
3-major threat to babies
lesions usually 1st appear on:
- head
- chest
- back
-on mucous membranes
-itch
_______________can lead to serious secondary infections
scratching
Causative Agent
Varicella-zoster virus (VZV)
Zoster = shingles
zas tir/shin gils
zoster/ shin gle
reactivation of own latent virus
اعادة تنشيط الفيروس الكامن الخاص
(1) can occur at any age
(2) increasingly common later in life
(3) does not spread person to person
rash similar to chickenpox except:
(1) limited to one side of the body
(2) painful
duration of pain :
-lesions subside in week
-pain can last months or longer
transmission:
(1) result in chickenpox in susceptible person
(2) need contact with drainage from lesions
sis sap tib ill=vulnerable=قابل للعطب
sus cep tible
Pathogenesis
-enters body by respiratory route
-disseminates to skin via bloodstream
